यदि (x-2-2(a+b)x+4ab=0) के मूल समान हैं, तो कौन सा संबंध सही है?

If (x-2-2(a+b)x+4ab=0) has equal roots, which relation is correct?

Explanation opens after your attempt
Correct Answer

A. (a=b)

Step 1

Concept

(D=4(a+b)2-16ab=4(a-b)2). From (D=0), (a=b).

Step 2

Why this answer is correct

The correct answer is A. (a=b). (D=4(a+b)2-16ab=4(a-b)2). From (D=0), (a=b).

Step 3

Exam Tip

(D=4(a+b)2-16ab=4(a-b)2) है। (D=0) से (a=b) मिलता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (x-2-2(a+b)x+4ab=0) के मूल समान हैं, तो कौन सा संबंध सही है? / If (x-2-2(a+b)x+4ab=0) has equal roots, which relation is correct?

Correct Answer: A. (a=b). Explanation: (D=4(a+b)2-16ab=4(a-b)2) है। (D=0) से (a=b) मिलता है। / (D=4(a+b)2-16ab=4(a-b)2). From (D=0), (a=b).

Which concept should I revise for this Mathematics MCQ?

(D=4(a+b)2-16ab=4(a-b)2). From (D=0), (a=b).

What exam hint can help solve this Mathematics question?

(D=4(a+b)2-16ab=4(a-b)2) है। (D=0) से (a=b) मिलता है।