0=-4.9(x^2)+80

Solution for 0=-4.9(x^2)+80 equation:

Simplifying
0 = -4.9(x2) + 80

Reorder the terms:
0 = 80 + -4.9x2

Solving
0 = 80 + -4.9x2

Solving for variable 'x'.

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

Add '4.9x2' to each side of the equation.
0 + 4.9x2 = 80 + -4.9x2 + 4.9x2
Remove the zero:
4.9x2 = 80 + -4.9x2 + 4.9x2

Combine like terms: -4.9x2 + 4.9x2 = 0.0
4.9x2 = 80 + 0.0
4.9x2 = 80

Divide each side by '4.9'.
x2 = 16.32653061

Simplifying
x2 = 16.32653061

Take the square root of each side:
x = {-4.040610178, 4.040610178}