Question

Expand the following using identity:(i) ( 2x+y) (2x-y)​

Answer 1

Answer:

Idn:(a+b)(a-b)=a^2-b^2

(2x+y)(2x-y)=(2x)^2-y^2=4x^2-y^2

Answer 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