Concept-wise Practice

x minus 4 MCQ Questions for Class 9

x minus 4 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 4.

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

( (x-4)3 ) का सही विस्तार कौन-सा है?

Which is the correct expansion of ( (x-4)3 )?

Explanation opens after your attempt
Correct Answer

A. \(x^3-12x^2+48x-64\)सही विस्तार

Step 1

Concept

In the cube of a difference, signs follow (+), (-), (+), (-). Exam tip: check both \(4^2\) and \(4^3\).

Step 2

Why this answer is correct

The correct answer is A. \(x^3-12x^2+48x-64\) / सही विस्तार. In the cube of a difference, signs follow (+), (-), (+), (-). Exam tip: check both \(4^2\) and \(4^3\).

Step 3

Exam Tip

घटाव के घन में चिह्न (+), (-), (+), (-) क्रम में आते हैं। परीक्षा में \(4^2\) और \(4^3\) दोनों देखें।

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

( (x+4)3-(x-4)3 ) का पूरा सरल रूप क्या है?

What is the complete simplified form of ( (x+4)3-(x-4)3 )?

Explanation opens after your attempt
Correct Answer

A. \(24x^2+128\)सही रूप

Step 1

Concept

In cube expansion, the \(x^3\) and (x) terms cancel. Exam tip: change signs and combine like terms.

Step 2

Why this answer is correct

The correct answer is A. \(24x^2+128\) / सही रूप. In cube expansion, the \(x^3\) and (x) terms cancel. Exam tip: change signs and combine like terms.

Step 3

Exam Tip

घन विस्तार में \(x^3\) और (x) वाले पद कट जाते हैं। परीक्षा में चिह्न बदलकर समान पद जोड़ें।

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