Hard Mathematics Quadratic Equations Class 10 Level 29

समीकरण ((x-2)2+(2x+1)2=25) का मानक रूप कौन-सा है?

What is the standard form of ((x-2)2+(2x+1)2=25)?

Explanation opens after your attempt
Correct Answer

D. \(5x^2-20=0\)

Step 1

Concept

Expanding gives \(x^2-4x+4+4x^2+4x+1=25\). This gives \(5x^2-20=0\).

Step 2

Why this answer is correct

The correct answer is D. \(5x^2-20=0\). Expanding gives \(x^2-4x+4+4x^2+4x+1=25\). This gives \(5x^2-20=0\).

Step 3

Exam Tip

विस्तार करने पर \(x^2-4x+4+4x^2+4x+1=25\) मिलता है। इससे \(5x^2-20=0\) बनता है।

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Mathematics Answer, Explanation and Revision Hints

समीकरण ((x-2)2+(2x+1)2=25) का मानक रूप कौन-सा है? / What is the standard form of ((x-2)2+(2x+1)2=25)?

Correct Answer: D. \(5x^2-20=0\). Explanation: विस्तार करने पर \(x^2-4x+4+4x^2+4x+1=25\) मिलता है। इससे \(5x^2-20=0\) बनता है। / Expanding gives \(x^2-4x+4+4x^2+4x+1=25\). This gives \(5x^2-20=0\).

Which concept should I revise for this Mathematics MCQ?

Expanding gives \(x^2-4x+4+4x^2+4x+1=25\). This gives \(5x^2-20=0\).

What exam hint can help solve this Mathematics question?

विस्तार करने पर \(x^2-4x+4+4x^2+4x+1=25\) मिलता है। इससे \(5x^2-20=0\) बनता है।

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