Concept-wise Practice

8x MCQ Questions for Class 9

8x 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 8x.

Question 1/2 Expert Mathematics Exploring Algebraic Identities Algebraic identities Class 9 Level 64

( (8x+1)2-(8x-1)2 ) का सरल रूप क्या है?

What is the simplified form of ( (8x+1)2-(8x-1)2 )?

Explanation opens after your attempt
Correct Answer

B. (32x)सही मान

Step 1

Concept

This is (4ab), where (a=8x) and (b=1), so (32x) is obtained. Exam tip: take the full term for (a).

Step 2

Why this answer is correct

The correct answer is B. (32x) / सही मान. This is (4ab), where (a=8x) and (b=1), so (32x) is obtained. Exam tip: take the full term for (a).

Step 3

Exam Tip

यह (4ab) है जहाँ (a=8x) और (b=1), इसलिए (32x) मिलता है। परीक्षा में (a) का पूरा पद लें।

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

( (x+y+4)2 ) में (8x) किस जोड़ी से आता है?

In ( (x+y+4)2 ), from which pair does (8x) come?

Explanation opens after your attempt
Correct Answer

B. (x) और (4)pair (x) and (4)

Step 1

Concept

\(8x=2\cdot x\cdot4\). Exam tip: identify pair products in the square of three terms.

Step 2

Why this answer is correct

The correct answer is B. (x) और (4) / pair (x) and (4). \(8x=2\cdot x\cdot4\). Exam tip: identify pair products in the square of three terms.

Step 3

Exam Tip

\(8x=2\cdot x\cdot4\) से आता है। परीक्षा में तीन पदों के वर्ग में जोड़ी गुणन पहचानें।

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