-2x^2+9=1

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Solution for -2x^2+9=1 equation: 


Simplifying
-2x2 + 9 = 1

Reorder the terms:
9 + -2x2 = 1

Solving
9 + -2x2 = 1

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 + -2x2 = 1 + -9

Combine like terms: 9 + -9 = 0
0 + -2x2 = 1 + -9
-2x2 = 1 + -9

Combine like terms: 1 + -9 = -8
-2x2 = -8

Divide each side by '-2'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}

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