ziahr2003 ziahr2003
  • 25-07-2018
  • Mathematics
contestada

Solve the equation x2 = 64 for x. A. -32, 32 B. -8, 8 C. 8 D. 32

Respuesta :

gmany
gmany gmany
  • 25-07-2018

[tex]x^2=64\to x=\pm\sqrt{64}\\\\\boxed{x=-8\ \vee\ x=8}\\\\\text{because}\ (-8)^2=8^2=64[/tex]



Answer: B. -8, 8

Answer Link
Nonportrit
Nonportrit Nonportrit
  • 25-07-2018

Here is your answer:


x^2 = 64

8 × 8 = 64

8 ÷ 64 = 8

-8 ÷ -64 = 8

= -8, 8


Therefore the answer is option B "-8, 8."


Hope this helps!


~Nonportrit

Answer Link

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