4.4(x*x)+8=72

Solution for 4.4(x*x)+8=72 equation:

Simplifying
4.4(x * x) + 8 = 72

Multiply x * x
4.4(x2) + 8 = 72

Reorder the terms:
8 + 4.4x2 = 72

Solving
8 + 4.4x2 = 72

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 4.4x2 = 72 + -8

Combine like terms: 8 + -8 = 0
0 + 4.4x2 = 72 + -8
4.4x2 = 72 + -8

Combine like terms: 72 + -8 = 64
4.4x2 = 64

Divide each side by '4.4'.
x2 = 14.54545455

Simplifying
x2 = 14.54545455

Take the square root of each side:
x = {-3.813850358, 3.813850358}