Concept-wise Practice

surd substitution MCQ Questions for Class 10

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

Practice Questions

1 questions tagged with surd substitution.

यदि \(x=\sqrt{2}\), तो \(\frac{x^6-8}{x^2-2}\) के बारे में सही कथन कौन-सा है?

If \(x=\sqrt{2}\), which statement about \(\frac{x^6-8}{x^2-2}\) is correct?

Explanation opens after your attempt
Correct Answer

A. यह अपरिभाषित हैIt is undefined

Step 1

Concept

For \(x=\sqrt{2}\), \(x^2=2\).

Step 2

Why this answer is correct

The denominator \(x^2-2=0\), so the fraction is undefined.

Step 3

Exam Tip

Before evaluating a fraction, always check whether the denominator becomes zero. चरण 1: \(x=\sqrt{2}\) होने पर \(x^2=2\)। चरण 2: हर \(x^2-2=0\) हो जाता है, इसलिए भिन्न अपरिभाषित है। चरण 3: भिन्न का मान निकालने से पहले हर शून्य तो नहीं, यह जरूर जाँचें।

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