(2x+5)^2-(2x-5)^2 solve this quation
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(2x+5)^2-(2x-5)^2
=4x^2+25+20x-(4x^2+25 -20x)
=4x^2+25-20x-4x^2-25+20x
=40x
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Answered by
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( 2x+5)² - (2x-5)² is in the form of a²-b²
a²-b² = (a+b) (a-b)
= (2x+5+2x-5) (2x+5-2x+5)
= (4x) (10) = 40x
Hope this helps!
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