lakaralake11
08.03.2020 •
Mathematics
How do you expand the following?
(X+8)(x-8)
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Ответ:
x^2−64
Step-by-step explanation:
(x+8)(x−8)
=(x+8)(x+−8)
=(x)(x)+(x)(−8)+(8)(x)+(8)(−8)
=x^2−8x+8x−64
=x^2−64
Ответ:
-10n=-20 so n must be 2