यदि (f(x)=2x-2-1) और (g(x)=x-2+2) हैं, तो ((3f-2g)(x)) क्या होगा?
If (f(x)=2x-2-1) and (g(x)=x-2+2), what is ((3f-2g)(x))?
Explanation opens after your attempt
A. \(4x^2-7\)
Concept
(3f-2g=3\(2x^2-1\)-2\(x^2+2\)=4x-2-7). Sign mistakes in constant terms are common.
Why this answer is correct
The correct answer is A. \(4x^2-7\). (3f-2g=3\(2x^2-1\)-2\(x^2+2\)=4x-2-7). Sign mistakes in constant terms are common.
Exam Tip
(3f-2g=3\(2x^2-1\)-2\(x^2+2\)=4x-2-7)। स्थिर पदों में ऋण चिह्न की गलती आम होती है।
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