यदि (a+b=8) और (ab=12), तो (4(a+b)-ab) का मान क्या होगा?
If (a+b=8) and (ab=12), what is the value of (4(a+b)-ab)?
Explanation opens after your attempt
D. (20)
Concept
Substitute the given whole expressions directly. (4(8)-12=20).
Why this answer is correct
The correct answer is D. (20). Substitute the given whole expressions directly. (4(8)-12=20).
Exam Tip
दिए हुए पूरे व्यंजकों को सीधे रखें। (4(8)-12=20) मिलता है।
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