7x^2+2-9=0

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

Simplifying
7x2 + 2 + -9 = 0

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

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

Solving
-7 + 7x2 = 0

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 7x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 7x2 = 0 + 7
7x2 = 0 + 7

Combine like terms: 0 + 7 = 7
7x2 = 7

Divide each side by '7'.
x2 = 1

Simplifying
x2 = 1

Take the square root of each side:
x = {-1, 1}