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)?
Explanation opens after your attempt
B. (5)
Concept
(45=(a+b)(a-b)=9(a-b)), so (a-b=5). Exam tip: divide the area by the known side.
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.
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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