-16x^2+39.2=15.6

Solution for -16x^2+39.2=15.6 equation:

Simplifying
-16x2 + 39.2 = 15.6

Reorder the terms:
39.2 + -16x2 = 15.6

Solving
39.2 + -16x2 = 15.6

Solving for variable 'x'.

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

Add '-39.2' to each side of the equation.
39.2 + -39.2 + -16x2 = 15.6 + -39.2

Combine like terms: 39.2 + -39.2 = 0.0
0.0 + -16x2 = 15.6 + -39.2
-16x2 = 15.6 + -39.2

Combine like terms: 15.6 + -39.2 = -23.6
-16x2 = -23.6

Divide each side by '-16'.
x2 = 1.475

Simplifying
x2 = 1.475

Take the square root of each side:
x = {-1.21449578, 1.21449578}