((x+9)(x-9)) का सरल रूप क्या है?
What is the simplified form of ((x+9)(x-9))?
Explanation opens after your attempt
A. \(x^2-81\)
Concept
This is of the form ((a+b)(a-b)=a-2-b-2). Therefore the answer is \(x^2-81\).
Why this answer is correct
The correct answer is A. \(x^2-81\). This is of the form ((a+b)(a-b)=a-2-b-2). Therefore the answer is \(x^2-81\).
Exam Tip
यह ((a+b)(a-b)=a-2-b-2) का रूप है। इसलिए उत्तर \(x^2-81\) है।
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