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error-checking MCQ Questions for Class 10

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7 questions tagged with error-checking.

Question 1/7 Expert Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 36

\(8x^2-23x-15=0\) का सही गुणनखंड रूप कौनसा है?

What is the correct factorised form of \(8x^2-23x-15=0\)?

Explanation opens after your attempt
Correct Answer

C. ((x+5)(8x-3)=0)

Step 1

Concept

((x+5)(8x-3)) does not expand to the given equation, so the options must be checked carefully. The correct factorisation is not present among careless options.

Step 2

Why this answer is correct

The correct answer is C. ((x+5)(8x-3)=0). ((x+5)(8x-3)) does not expand to the given equation, so the options must be checked carefully. The correct factorisation is not present among careless options.

Step 3

Exam Tip

((x+5)(8x-3)=8x-2+37x-15) नहीं बनता; इसलिए विकल्पों में भी सावधानी चाहिए। सही गुणनखंड ((8x+5)(x-3)) नहीं है, अतः यह प्रश्न जाँच आधारित है।

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Question 2/7 Expert Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 36

\(12x^2+x-6=0\) में एक छात्र ने \(x=\frac{2}{3},-\frac{3}{4}\) लिखा है। यह उत्तर कैसा है?

A student wrote \(x=\frac{2}{3},-\frac{3}{4}\) for \(12x^2+x-6=0\). How is this answer?

Explanation opens after your attempt
Correct Answer

A. सही हैCorrect

Step 1

Concept

(12x-2+x-6=(3x-2)(4x+3)), so \(x=\frac{2}{3},-\frac{3}{4}\) is correct. In exams, change signs carefully from factors.

Step 2

Why this answer is correct

The correct answer is A. सही है / Correct. (12x-2+x-6=(3x-2)(4x+3)), so \(x=\frac{2}{3},-\frac{3}{4}\) is correct. In exams, change signs carefully from factors.

Step 3

Exam Tip

(12x-2+x-6=(3x-2)(4x+3)), इसलिए \(x=\frac{2}{3},-\frac{3}{4}\) सही है। परीक्षा में गुणनखंडों से संकेत सावधानी से बदलें।

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Question 3/7 Expert Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 35

\(10x^2+x-3=0\) में एक छात्र ने \(x=\frac{1}{2},-\frac{3}{5}\) लिखा है। यह उत्तर कैसा है?

A student wrote \(x=\frac{1}{2},-\frac{3}{5}\) for \(10x^2+x-3=0\). How is this answer?

Explanation opens after your attempt
Correct Answer

A. सही हैCorrect

Step 1

Concept

(10x-2+x-3=(5x+3)(2x-1)), so \(x=\frac{1}{2},-\frac{3}{5}\) is correct. In exams, change signs carefully from factors.

Step 2

Why this answer is correct

The correct answer is A. सही है / Correct. (10x-2+x-3=(5x+3)(2x-1)), so \(x=\frac{1}{2},-\frac{3}{5}\) is correct. In exams, change signs carefully from factors.

Step 3

Exam Tip

(10x-2+x-3=(5x+3)(2x-1)), इसलिए \(x=\frac{1}{2},-\frac{3}{5}\) सही है। परीक्षा में गुणनखंडों से संकेत सावधानी से बदलें।

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Question 4/7 Expert Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 34

\(6x^2+x-2=0\) में एक छात्र ने \(x=\frac{1}{2},-\frac{2}{3}\) लिखा है। यह उत्तर कैसा है?

A student wrote \(x=\frac{1}{2},-\frac{2}{3}\) for \(6x^2+x-2=0\). How is this answer?

Explanation opens after your attempt
Correct Answer

A. सही हैCorrect

Step 1

Concept

(6x-2+x-2=(3x+2)(2x-1)), so \(x=\frac{1}{2},-\frac{2}{3}\) is correct. In exams, change signs carefully from factors.

Step 2

Why this answer is correct

The correct answer is A. सही है / Correct. (6x-2+x-2=(3x+2)(2x-1)), so \(x=\frac{1}{2},-\frac{2}{3}\) is correct. In exams, change signs carefully from factors.

Step 3

Exam Tip

(6x-2+x-2=(3x+2)(2x-1)), इसलिए \(x=\frac{1}{2},-\frac{2}{3}\) सही है। परीक्षा में गुणनखंडों से संकेत सावधानी से बदलें।

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Question 5/7 Hard Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 36

\(4x^2+4x-3=0\) में एक छात्र ने \(x=\frac{1}{2},-\frac{3}{2}\) लिखा है। यह उत्तर कैसा है?

A student wrote \(x=\frac{1}{2},-\frac{3}{2}\) for \(4x^2+4x-3=0\). How is this answer?

Explanation opens after your attempt
Correct Answer

A. सही हैCorrect

Step 1

Concept

(4x-2+4x-3=(2x-1)(2x+3)), so \(x=\frac{1}{2},-\frac{3}{2}\) is correct. In exams, change signs carefully from factors.

Step 2

Why this answer is correct

The correct answer is A. सही है / Correct. (4x-2+4x-3=(2x-1)(2x+3)), so \(x=\frac{1}{2},-\frac{3}{2}\) is correct. In exams, change signs carefully from factors.

Step 3

Exam Tip

(4x-2+4x-3=(2x-1)(2x+3)), इसलिए \(x=\frac{1}{2},-\frac{3}{2}\) सही है। परीक्षा में गुणनखंडों से संकेत सावधानी से बदलें।

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Question 6/7 Hard Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 35

\(3x^2+x-2=0\) में एक छात्र ने \(x=\frac{2}{3},-1\) लिखा है। यह उत्तर कैसा है?

A student wrote \(x=\frac{2}{3},-1\) for \(3x^2+x-2=0\). How is this answer?

Explanation opens after your attempt
Correct Answer

A. सही हैCorrect

Step 1

Concept

(3x-2+x-2=(3x-2)(x+1)), so \(x=\frac{2}{3},-1\) is correct. In exams, change signs carefully from factors.

Step 2

Why this answer is correct

The correct answer is A. सही है / Correct. (3x-2+x-2=(3x-2)(x+1)), so \(x=\frac{2}{3},-1\) is correct. In exams, change signs carefully from factors.

Step 3

Exam Tip

(3x-2+x-2=(3x-2)(x+1)), इसलिए \(x=\frac{2}{3},-1\) सही है। परीक्षा में गुणनखंडों से संकेत सावधानी से बदलें।

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Question 7/7 Hard Mathematics Quadratic Equations Methods of Solving Quadratic Equations Class 10 Level 34

\(2x^2+3x-2=0\) में एक छात्र ने \(x=\frac{1}{2},-2\) लिखा है। यह उत्तर कैसा है?

A student wrote \(x=\frac{1}{2},-2\) for \(2x^2+3x-2=0\). How is this answer?

Explanation opens after your attempt
Correct Answer

A. सही हैCorrect

Step 1

Concept

(2x-2+3x-2=(2x-1)(x+2)), so \(x=\frac{1}{2},-2\) is correct. In exams, change signs carefully from factors.

Step 2

Why this answer is correct

The correct answer is A. सही है / Correct. (2x-2+3x-2=(2x-1)(x+2)), so \(x=\frac{1}{2},-2\) is correct. In exams, change signs carefully from factors.

Step 3

Exam Tip

(2x-2+3x-2=(2x-1)(x+2)), इसलिए \(x=\frac{1}{2},-2\) सही है। परीक्षा में गुणनखंडों से संकेत सावधानी से बदलें।

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