Expand the following using identity:(i) ( 2x+y) (2x-y)
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Expand the following using identity:(i) ( 2x+y) (2x-y)
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Answer:
Idn:(a+b)(a-b)=a^2-b^2
(2x+y)(2x-y)=(2x)^2-y^2=4x^2-y^2
the above problem is in
(a+b)(a-b) = a² - b²
so, we need to solve by using above formula
(2X+Y)(2x-y) = (2X)² - y²
= 4x² - y²