यदि किसी वर्ग मॉडल का क्षेत्रफल \(25x^2-30xy+9y^2\) है, तो उसकी भुजा क्या होगी?

If the area of a square model is \(25x^2-30xy+9y^2\), what is its side?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

C. (5x-3y)

Step 1

Concept

This is the expansion of ((5x-3y)2) because the middle term is (-30xy). Exam tip: identify subtraction in the side from the negative middle term.

Step 2

Why this answer is correct

The correct answer is C. (5x-3y). This is the expansion of ((5x-3y)2) because the middle term is (-30xy). Exam tip: identify subtraction in the side from the negative middle term.

Step 3

Exam Tip

यह ((5x-3y)2) का विस्तार है क्योंकि बीच का पद (-30xy) है। परीक्षा में ऋणात्मक मध्य पद से भुजा में घटाव पहचानें।

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यदि किसी वर्ग मॉडल का क्षेत्रफल \(25x^2-30xy+9y^2\) है, तो उसकी भुजा क्या होगी? / If the area of a square model is \(25x^2-30xy+9y^2\), what is its side?

Correct Answer: C. (5x-3y). Explanation: यह ((5x-3y)2) का विस्तार है क्योंकि बीच का पद (-30xy) है। परीक्षा में ऋणात्मक मध्य पद से भुजा में घटाव पहचानें। / This is the expansion of ((5x-3y)2) because the middle term is (-30xy). Exam tip: identify subtraction in the side from the negative middle term.

Which concept should I revise for this Mathematics MCQ?

This is the expansion of ((5x-3y)2) because the middle term is (-30xy). Exam tip: identify subtraction in the side from the negative middle term.

What exam hint can help solve this Mathematics question?

यह ((5x-3y)2) का विस्तार है क्योंकि बीच का पद (-30xy) है। परीक्षा में ऋणात्मक मध्य पद से भुजा में घटाव पहचानें।