Medium Mathematics Quadratic Equations Class 10 Level 30

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
Correct Answer

A. \(x^2+7x-120=0\)

Step 1

Concept

The length is (x+7), and the area is (x(x+7)=120). Therefore \(x^2+7x-120=0\).

Step 2

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 \(x^2+7x-120=0\).

Step 3

Exam Tip

लंबाई (x+7) होगी और क्षेत्रफल (x(x+7)=120) होगा। इसलिए \(x^2+7x-120=0\) है।

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Mathematics Answer, Explanation and Revision Hints

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?

Correct Answer: A. \(x^2+7x-120=0\). Explanation: लंबाई (x+7) होगी और क्षेत्रफल (x(x+7)=120) होगा। इसलिए \(x^2+7x-120=0\) है। / The length is (x+7), and the area is (x(x+7)=120). Therefore \(x^2+7x-120=0\).

Which concept should I revise for this Mathematics MCQ?

The length is (x+7), and the area is (x(x+7)=120). Therefore \(x^2+7x-120=0\).

What exam hint can help solve this Mathematics question?

लंबाई (x+7) होगी और क्षेत्रफल (x(x+7)=120) होगा। इसलिए \(x^2+7x-120=0\) है।

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