यदि (a+b=7) और (ab=10), तो (3(a+b)-2ab) का मान क्या होगा?

If (a+b=7) and (ab=10), what is the value of (3(a+b)-2ab)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. (1)

Step 1

Concept

Substitute the given whole expressions directly. (3(7)-2(10)=21-20=1).

Step 2

Why this answer is correct

The correct answer is A. (1). Substitute the given whole expressions directly. (3(7)-2(10)=21-20=1).

Step 3

Exam Tip

दिए हुए पूरे व्यंजकों को सीधे रखें। (3(7)-2(10)=21-20=1)।

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Mathematics Answer, Explanation and Revision Hints

यदि (a+b=7) और (ab=10), तो (3(a+b)-2ab) का मान क्या होगा? / If (a+b=7) and (ab=10), what is the value of (3(a+b)-2ab)?

Correct Answer: A. (1). Explanation: दिए हुए पूरे व्यंजकों को सीधे रखें। (3(7)-2(10)=21-20=1)। / Substitute the given whole expressions directly. (3(7)-2(10)=21-20=1).

Which concept should I revise for this Mathematics MCQ?

Substitute the given whole expressions directly. (3(7)-2(10)=21-20=1).

What exam hint can help solve this Mathematics question?

दिए हुए पूरे व्यंजकों को सीधे रखें। (3(7)-2(10)=21-20=1)।