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laurengirl12 laurengirl12
  • 03-07-2016
  • Mathematics
Answered

Expand these:

A(x + 2)(x - 2)

B(y - 4)(y + 2)

Verified Answer :

tinmann tinmann
  • 04-07-2016
AUSE FOIL 
* first term squared, plus of minus, double the product, plus the last term squared 
^ A mathematical hymn which my math teacher taught me.

So:

a. x^2 - 2x +2x - 4
This can simplify to 
x^2 + 4 

b. y^2 + 2y - 4y - 8
This can simplify to 
y^2 - 2y - 8


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