5x^2+9-72=0

Solution for 5x^2+9-72=0 equation:

Simplifying
5x2 + 9 + -72 = 0

Reorder the terms:
9 + -72 + 5x2 = 0

Combine like terms: 9 + -72 = -63
-63 + 5x2 = 0

Solving
-63 + 5x2 = 0

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 5x2 = 0 + 63

Combine like terms: -63 + 63 = 0
0 + 5x2 = 0 + 63
5x2 = 0 + 63

Combine like terms: 0 + 63 = 63
5x2 = 63

Divide each side by '5'.
x2 = 12.6

Simplifying
x2 = 12.6

Take the square root of each side:
x = {-3.54964787, 3.54964787}