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Answer:
x^2 -4
Step-by-step explanation:
(x-2)(x+2)
We want to FOIL
First x*x = x^2
Outer x*2 =2x
Inner -2 *x = -2x
Last -2*2 = -4
Add them together
x^2+2x-2x-4
Combine like terms
x^2 -4