18-4*x*x=-36

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Solution for 18-4*x*x=-36 equation: 


Simplifying
18 + -4x * x = -36

Multiply x * x
18 + -4x2 = -36

Solving
18 + -4x2 = -36

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + -4x2 = -36 + -18

Combine like terms: 18 + -18 = 0
0 + -4x2 = -36 + -18
-4x2 = -36 + -18

Combine like terms: -36 + -18 = -54
-4x2 = -54

Divide each side by '-4'.
x2 = 13.5

Simplifying
x2 = 13.5

Take the square root of each side:
x = {-3.674234614, 3.674234614}

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