\(x^2-4x+7\) का न्यूनतम मान क्या है?
What is the minimum value of \(x^2-4x+7\)?
Explanation opens after your attempt
B. (3)
Concept
(x-2-4x+7=(x-2)2+3). Since the minimum of a square is (0), the value is (3).
Why this answer is correct
The correct answer is B. (3). (x-2-4x+7=(x-2)2+3). Since the minimum of a square is (0), the value is (3).
Exam Tip
(x-2-4x+7=(x-2)2+3) है। वर्ग का न्यूनतम (0) होने से मान (3) है।
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