What are the solutions to the equation x² = 256?

asked Aug 9, 2019 117k views

1 vote

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2 votes

x² = 256
x = ±√256
x = ±16

the solutions are x = -16 and x = 16

Saanch answered Aug 12, 2019

6.1k points

7 votes

x = 16
x = - 16

You could do it this way
x^2 - 256 = 0
(x - 16)(x + 16) = 0
x - 16 = 0
x = 16

x + 16 = 0
x = - 16

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