यदि (p(x)=x-2+ax+b), (p(-2)=0) और (p(5)=0), तो (a+b) क्या है?

If (p(x)=x-2+ax+b), (p(-2)=0), and (p(5)=0), what is (a+b)?

Explanation opens after your attempt
Correct Answer

A. (-13)

Step 1

Concept

The zeros are (-2) and (5), so the polynomial is ((x+2)(x-5)=x-2-3x-10). Hence (a+b=-3-10=-13).

Step 2

Why this answer is correct

The correct answer is A. (-13). The zeros are (-2) and (5), so the polynomial is ((x+2)(x-5)=x-2-3x-10). Hence (a+b=-3-10=-13).

Step 3

Exam Tip

शून्य (-2) और (5) हैं, इसलिए बहुपद ((x+2)(x-5)=x-2-3x-10) है। अतः (a+b=-3-10=-13)।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=x-2+ax+b), (p(-2)=0) और (p(5)=0), तो (a+b) क्या है? / If (p(x)=x-2+ax+b), (p(-2)=0), and (p(5)=0), what is (a+b)?

Correct Answer: A. (-13). Explanation: शून्य (-2) और (5) हैं, इसलिए बहुपद ((x+2)(x-5)=x-2-3x-10) है। अतः (a+b=-3-10=-13)। / The zeros are (-2) and (5), so the polynomial is ((x+2)(x-5)=x-2-3x-10). Hence (a+b=-3-10=-13).

Which concept should I revise for this Mathematics MCQ?

The zeros are (-2) and (5), so the polynomial is ((x+2)(x-5)=x-2-3x-10). Hence (a+b=-3-10=-13).

What exam hint can help solve this Mathematics question?

शून्य (-2) और (5) हैं, इसलिए बहुपद ((x+2)(x-5)=x-2-3x-10) है। अतः (a+b=-3-10=-13)।