-4(x^2-8)=84

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Solution for -4(x^2-8)=84 equation:


Simplifying
-4(x2 + -8) = 84

Reorder the terms:
-4(-8 + x2) = 84
(-8 * -4 + x2 * -4) = 84
(32 + -4x2) = 84

Solving
32 + -4x2 = 84

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-32' to each side of the equation.
32 + -32 + -4x2 = 84 + -32

Combine like terms: 32 + -32 = 0
0 + -4x2 = 84 + -32
-4x2 = 84 + -32

Combine like terms: 84 + -32 = 52
-4x2 = 52

Divide each side by '-4'.
x2 = -13

Simplifying
x2 = -13

Reorder the terms:
13 + x2 = -13 + 13

Combine like terms: -13 + 13 = 0
13 + x2 = 0

The solution to this equation could not be determined.

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