किस मान पर (x-2-(a+3)x+3a=0) के मूल समान होंगे?

For which value will (x-2-(a+3)x+3a=0) have equal roots?

Explanation opens after your attempt
Correct Answer

A. (a=3)

Step 1

Concept

(D=(a+3)2-12a=(a-3)2). For (D=0), (a=3).

Step 2

Why this answer is correct

The correct answer is A. (a=3). (D=(a+3)2-12a=(a-3)2). For (D=0), (a=3).

Step 3

Exam Tip

(D=(a+3)2-12a=(a-3)2) है। (D=0) के लिए (a=3) होगा।

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Mathematics Answer, Explanation and Revision Hints

किस मान पर (x-2-(a+3)x+3a=0) के मूल समान होंगे? / For which value will (x-2-(a+3)x+3a=0) have equal roots?

Correct Answer: A. (a=3). Explanation: (D=(a+3)2-12a=(a-3)2) है। (D=0) के लिए (a=3) होगा। / (D=(a+3)2-12a=(a-3)2). For (D=0), (a=3).

Which concept should I revise for this Mathematics MCQ?

(D=(a+3)2-12a=(a-3)2). For (D=0), (a=3).

What exam hint can help solve this Mathematics question?

(D=(a+3)2-12a=(a-3)2) है। (D=0) के लिए (a=3) होगा।