0=48-4.9x^2

Solution for 0=48-4.9x^2 equation:

Simplifying
0 = 48 + -4.9x2

Solving
0 = 48 + -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 = 48 + -4.9x2 + 4.9x2
Remove the zero:
4.9x2 = 48 + -4.9x2 + 4.9x2

Combine like terms: -4.9x2 + 4.9x2 = 0.0
4.9x2 = 48 + 0.0
4.9x2 = 48

Divide each side by '4.9'.
x2 = 9.795918367

Simplifying
x2 = 9.795918367

Take the square root of each side:
x = {-3.129843186, 3.129843186}