Concept-wise Practice

x minus 3 MCQ Questions for Class 9

x minus 3 se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with x minus 3.

Question 1/2 Hard Mathematics Exploring Algebraic Identities Algebraic identities Class 9 Level 65

( (x-3)3 ) का सही विस्तार कौन-सा है?

Which is the correct expansion of ( (x-3)3 )?

Explanation opens after your attempt
Correct Answer

A. \(x^3-9x^2+27x-27\)सही विस्तार

Step 1

Concept

In the cube of a difference, signs occur in (+), (-), (+), (-) order. Exam tip: check both \(3^2\) and \(3^3\).

Step 2

Why this answer is correct

The correct answer is A. \(x^3-9x^2+27x-27\) / सही विस्तार. In the cube of a difference, signs occur in (+), (-), (+), (-) order. Exam tip: check both \(3^2\) and \(3^3\).

Step 3

Exam Tip

घटाव के घन में चिह्न (+), (-), (+), (-) क्रम में आते हैं। परीक्षा में \(3^2\) और \(3^3\) दोनों देखें।

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Question 2/2 Easy Mathematics Exploring Algebraic Identities Algebraic identities Class 9 Level 65

\( x^2-6x+9 \) को किस रूप में लिखा जाएगा?

In which form will \( x^2-6x+9 \) be written?

Explanation opens after your attempt
Correct Answer

D. ( (x-3)2 )

Step 1

Concept

(x-2-6x+9=x-2-2\cdot x\cdot3+32=(x-3)2). Exam tip: check the square root of the last term.

Step 2

Why this answer is correct

The correct answer is D. ( (x-3)2 ). (x-2-6x+9=x-2-2\cdot x\cdot3+32=(x-3)2). Exam tip: check the square root of the last term.

Step 3

Exam Tip

(x-2-6x+9=x-2-2\cdot x\cdot3+32=(x-3)2)। परीक्षा में अंतिम पद का वर्गमूल देखें।

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