5x^2+9-18=0

Solution for 5x^2+9-18=0 equation:

Simplifying
5x2 + 9 + -18 = 0

Reorder the terms:
9 + -18 + 5x2 = 0

Combine like terms: 9 + -18 = -9
-9 + 5x2 = 0

Solving
-9 + 5x2 = 0

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 + 5x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 5x2 = 0 + 9
5x2 = 0 + 9

Combine like terms: 0 + 9 = 9
5x2 = 9

Divide each side by '5'.
x2 = 1.8

Simplifying
x2 = 1.8

Take the square root of each side:
x = {-1.341640787, 1.341640787}