7.5x^2-30=0

Solution for 7.5x^2-30=0 equation:

Simplifying
7.5x2 + -30 = 0

Reorder the terms:
-30 + 7.5x2 = 0

Solving
-30 + 7.5x2 = 0

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + 7.5x2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 7.5x2 = 0 + 30
7.5x2 = 0 + 30

Combine like terms: 0 + 30 = 30
7.5x2 = 30

Divide each side by '7.5'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}