-4x^2-9=9

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Solution for -4x^2-9=9 equation:


Simplifying
-4x2 + -9 = 9

Reorder the terms:
-9 + -4x2 = 9

Solving
-9 + -4x2 = 9

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + -4x2 = 9 + 9

Combine like terms: -9 + 9 = 0
0 + -4x2 = 9 + 9
-4x2 = 9 + 9

Combine like terms: 9 + 9 = 18
-4x2 = 18

Divide each side by '-4'.
x2 = -4.5

Simplifying
x2 = -4.5

Reorder the terms:
4.5 + x2 = -4.5 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
4.5 + x2 = 0.0

The solution to this equation could not be determined.

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