Question

What is the value of the expression (x – 2y)(x + 2y) when x= 4 and y = 2?

Answer 1

0

Explanation:

To solve this, you first plug in the 4 and 2 where the x and y's go, making the expression (4 - 2(2))*(4 + 2(2)). Then you solve each parenthesis (below).

(4 - 2(2))*(4 + 2(2)).

(4 - 4)*(4 + 4).

0*8

0

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