एक आयत की लंबाई चौड़ाई से (7) अधिक है और क्षेत्रफल (120) है। यदि चौड़ाई (x) है, तो समीकरण क्या होगा?
A rectangle has length (7) more than its breadth and area (120). If the breadth is (x), what is the equation?
Explanation opens after your attempt
A. \(x^2+7x-120=0\)
Concept
The length is (x+7), and the area is (x(x+7)=120). Therefore \(x^2+7x-120=0\).
Why this answer is correct
The correct answer is A. \(x^2+7x-120=0\). The length is (x+7), and the area is (x(x+7)=120). Therefore \(x^2+7x-120=0\).
Exam Tip
लंबाई (x+7) होगी और क्षेत्रफल (x(x+7)=120) होगा। इसलिए \(x^2+7x-120=0\) है।
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