Question

EXAMPLE 9 Simplify each of the following:
(1) (4x + 2y) +(4x - 2y)​

Answer 1

Step-by-step explanation:

2(2x+y)+2(2x+y)

(2+2)(2x+y)

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Answer 2

Answer:

We know (a-b)(a+b) = a^2 - b^2,

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

                              = 16x^2 - 4y^2

Take 4 common ,

4 ( 4x^2 - y^2 ) = 0

4x^2 - y^2

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