एक आयत की लंबाई (x+9) और चौड़ाई (x-6) है। क्षेत्रफल (130) हो तो सही समीकरण कौन-सा है?
A rectangle has length (x+9) and breadth (x-6). If its area is (130), which equation is correct?
Explanation opens after your attempt
A. \(x^2+3x-184=0\)
Concept
The area is ((x+9)(x-6)=130). Expanding gives \(x^2+3x-54=130\), so \(x^2+3x-184=0\).
Why this answer is correct
The correct answer is A. \(x^2+3x-184=0\). The area is ((x+9)(x-6)=130). Expanding gives \(x^2+3x-54=130\), so \(x^2+3x-184=0\).
Exam Tip
क्षेत्रफल ((x+9)(x-6)=130) होगा। विस्तार से \(x^2+3x-54=130\), इसलिए \(x^2+3x-184=0\)।
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