please answer this immediately fast question (2x+5)²- (2x-5)²
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Answer :- (2x+5)²- (2x-5)² = 40x
Explanation :-
(2x+5)²- (2x-5)²
This expression is in the form of a^2 - b^2 which is equal to (a+b)*(a-b)
Here, a = (2x+5) and b = (2x-5)
Now solving it in the form of (a+b)*(a-b)
= (2x+5+2x-5)*[(2x+5)-(2x-5)]
= (4x)*(2x+5-2x+5)
= (4x)*(10)
= 40x
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