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sum of identities MCQ Questions for Class 9

sum of identities 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 sum of identities.

Question 1/2 Medium Mathematics Exploring Algebraic Identities Algebraic identities Class 9 Level 62

( (3x+2)2+(3x-2)2 ) को सरल करने पर क्या मिलेगा?

What is obtained by simplifying ( (3x+2)2+(3x-2)2 )?

Explanation opens after your attempt
Correct Answer

A. \(18x^2+8\)सही परिणाम

Step 1

Concept

Using the sum identity gives (2(3x)2+2(2)2=18x-2+8). Exam tip: middle terms cancel.

Step 2

Why this answer is correct

The correct answer is A. \(18x^2+8\) / सही परिणाम. Using the sum identity gives (2(3x)2+2(2)2=18x-2+8). Exam tip: middle terms cancel.

Step 3

Exam Tip

योग पहचान से (2(3x)2+2(2)2=18x-2+8) मिलता है। परीक्षा में मध्य पद कटते हैं।

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

( (a+b)2+(a-b)2 ) का सरल रूप कौन-सा है?

Which is the simplified form of ( (a+b)2+(a-b)2 )?

Explanation opens after your attempt
Correct Answer

D. \(2a^2+2b^2\)

Step 1

Concept

Adding both expansions cancels middle terms and gives \(2a^2+2b^2\). Exam tip: add like terms.

Step 2

Why this answer is correct

The correct answer is D. \(2a^2+2b^2\). Adding both expansions cancels middle terms and gives \(2a^2+2b^2\). Exam tip: add like terms.

Step 3

Exam Tip

दोनों विस्तार जोड़ने पर मध्य पद कटते हैं और \(2a^2+2b^2\) मिलता है। परीक्षा में समान पद जोड़ें।

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