यदि \(z=\sqrt{17}\) है तो \(z^2-9\) का मान क्या है?

If \(z=\sqrt{17}\), what is the value of \(z^2-9\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (8)

Step 1

Concept

\(z^2=17\), so \(z^2-9=8\). First square the given radical.

Step 2

Why this answer is correct

The correct answer is B. (8). \(z^2=17\), so \(z^2-9=8\). First square the given radical.

Step 3

Exam Tip

\(z^2=17\), इसलिए \(z^2-9=8\) है। पहले दिए गए मूल का वर्ग करें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(z=\sqrt{17}\) है तो \(z^2-9\) का मान क्या है? / If \(z=\sqrt{17}\), what is the value of \(z^2-9\)?

Correct Answer: B. (8). Explanation: \(z^2=17\), इसलिए \(z^2-9=8\) है। पहले दिए गए मूल का वर्ग करें। / \(z^2=17\), so \(z^2-9=8\). First square the given radical.

Which concept should I revise for this Mathematics MCQ?

\(z^2=17\), so \(z^2-9=8\). First square the given radical.

What exam hint can help solve this Mathematics question?

\(z^2=17\), इसलिए \(z^2-9=8\) है। पहले दिए गए मूल का वर्ग करें।