2x^2-9-7=0

Solution for 2x^2-9-7=0 equation:

Simplifying
2x2 + -9 + -7 = 0

Reorder the terms:
-9 + -7 + 2x2 = 0

Combine like terms: -9 + -7 = -16
-16 + 2x2 = 0

Solving
-16 + 2x2 = 0

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + 2x2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 2x2 = 0 + 16
2x2 = 0 + 16

Combine like terms: 0 + 16 = 16
2x2 = 16

Divide each side by '2'.
x2 = 8

Simplifying
x2 = 8

Take the square root of each side:
x = {-2.828427125, 2.828427125}