((a-b)2) का सही विस्तार कौन-सा है?
Which is the correct expansion of ((a-b)2)?
Explanation opens after your attempt
B. \(a^2-2ab+b^2\)
Concept
In ((a-b)2), the middle term is (-2ab). Never ignore the negative sign.
Why this answer is correct
The correct answer is B. \(a^2-2ab+b^2\). In ((a-b)2), the middle term is (-2ab). Never ignore the negative sign.
Exam Tip
((a-b)2) में मध्य पद (-2ab) होता है। ऋण चिह्न को कभी न छोड़ें।
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