SOLUTION: Based off of this (x - 2y)(x + 2y) = 4 Which is greater A)x^2-4y^2 B)8 Why? Explain

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Question 469922: Based off of this (x - 2y)(x + 2y) = 4
Which is greater
A)x^2-4y^2
B)8
Why? Explain
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

F	First terms  x^2

O	Outside terms +2xy

I	Inside terms  -2xy

L	Last terms   -4y^2



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

B) 8 is greater