( (x+3)(x+7)-x-2 ) का सरल रूप क्या है?
What is the simplified form of ( (x+3)(x+7)-x-2 )?
Explanation opens after your attempt
A. (10x+21)
Concept
( (x+3)(x+7)=x-2+10x+21 ). Subtracting \(x^2\) leaves (10x+21).
Why this answer is correct
The correct answer is A. (10x+21). ( (x+3)(x+7)=x-2+10x+21 ). Subtracting \(x^2\) leaves (10x+21).
Exam Tip
( (x+3)(x+7)=x-2+10x+21 ) है। \(x^2\) घटाने पर (10x+21) बचता है।
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