यदि (x+y=9) और (x-y=1), तो \(x^2-y^2\) का मान क्या होगा?

If (x+y=9) and (x-y=1), what is the value of \(x^2-y^2\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (9)

Step 1

Concept

(x-2-y-2=(x-y)(x+y)). Therefore, the value is \(1\cdot9=9\).

Step 2

Why this answer is correct

The correct answer is B. (9). (x-2-y-2=(x-y)(x+y)). Therefore, the value is \(1\cdot9=9\).

Step 3

Exam Tip

(x-2-y-2=(x-y)(x+y)) होता है। इसलिए मान \(1\cdot9=9\) है।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि (x+y=9) और (x-y=1), तो \(x^2-y^2\) का मान क्या होगा? / If (x+y=9) and (x-y=1), what is the value of \(x^2-y^2\)?

Correct Answer: B. (9). Explanation: (x-2-y-2=(x-y)(x+y)) होता है। इसलिए मान \(1\cdot9=9\) है। / (x-2-y-2=(x-y)(x+y)). Therefore, the value is \(1\cdot9=9\).

Which concept should I revise for this Mathematics MCQ?

(x-2-y-2=(x-y)(x+y)). Therefore, the value is \(1\cdot9=9\).

What exam hint can help solve this Mathematics question?

(x-2-y-2=(x-y)(x+y)) होता है। इसलिए मान \(1\cdot9=9\) है।