यदि \(a^2-b^2=45\) का आयत मॉडल बना है और (a+b=9), तो आयत की दूसरी भुजा (a-b) क्या होगी?

If a rectangle model of \(a^2-b^2=45\) is made and (a+b=9), what is the other side (a-b)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (5)

Step 1

Concept

(45=(a+b)(a-b)=9(a-b)), so (a-b=5). Exam tip: divide the area by the known side.

Step 2

Why this answer is correct

The correct answer is B. (5). (45=(a+b)(a-b)=9(a-b)), so (a-b=5). Exam tip: divide the area by the known side.

Step 3

Exam Tip

(45=(a+b)(a-b)=9(a-b)), इसलिए (a-b=5)। परीक्षा में क्षेत्रफल को ज्ञात भुजा से भाग दें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a^2-b^2=45\) का आयत मॉडल बना है और (a+b=9), तो आयत की दूसरी भुजा (a-b) क्या होगी? / If a rectangle model of \(a^2-b^2=45\) is made and (a+b=9), what is the other side (a-b)?

Correct Answer: B. (5). Explanation: (45=(a+b)(a-b)=9(a-b)), इसलिए (a-b=5)। परीक्षा में क्षेत्रफल को ज्ञात भुजा से भाग दें। / (45=(a+b)(a-b)=9(a-b)), so (a-b=5). Exam tip: divide the area by the known side.

Which concept should I revise for this Mathematics MCQ?

(45=(a+b)(a-b)=9(a-b)), so (a-b=5). Exam tip: divide the area by the known side.

What exam hint can help solve this Mathematics question?

(45=(a+b)(a-b)=9(a-b)), इसलिए (a-b=5)। परीक्षा में क्षेत्रफल को ज्ञात भुजा से भाग दें।