8x^2-28=0

Solution for 8x^2-28=0 equation:

Simplifying
8x2 + -28 = 0

Reorder the terms:
-28 + 8x2 = 0

Solving
-28 + 8x2 = 0

Solving for variable 'x'.

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

Add '28' to each side of the equation.
-28 + 28 + 8x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 8x2 = 0 + 28
8x2 = 0 + 28

Combine like terms: 0 + 28 = 28
8x2 = 28

Divide each side by '8'.
x2 = 3.5

Simplifying
x2 = 3.5

Take the square root of each side:
x = {-1.870828693, 1.870828693}