-4x^2-80=0

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Solution for -4x^2-80=0 equation:


Simplifying
-4x2 + -80 = 0

Reorder the terms:
-80 + -4x2 = 0

Solving
-80 + -4x2 = 0

Solving for variable 'x'.

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

Add '80' to each side of the equation.
-80 + 80 + -4x2 = 0 + 80

Combine like terms: -80 + 80 = 0
0 + -4x2 = 0 + 80
-4x2 = 0 + 80

Combine like terms: 0 + 80 = 80
-4x2 = 80

Divide each side by '-4'.
x2 = -20

Simplifying
x2 = -20

Reorder the terms:
20 + x2 = -20 + 20

Combine like terms: -20 + 20 = 0
20 + x2 = 0

The solution to this equation could not be determined.

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