Answer:
(-4)^2 = 16
-4^2 = - 16
-2^2 + 20 - ( 8 * 2) = 16 - 16x
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1. 16
2. -16
3. 0
Explanation:
1. (-4)(-4)= 16
2. -(4)(4)= -16
3. -(2)(2)+20-(16)
-4+20-16
-20+20
=0
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