2x^2+28=100

Solution for 2x^2+28=100 equation:

Simplifying
2x2 + 28 = 100

Reorder the terms:
28 + 2x2 = 100

Solving
28 + 2x2 = 100

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 + 2x2 = 100 + -28

Combine like terms: 28 + -28 = 0
0 + 2x2 = 100 + -28
2x2 = 100 + -28

Combine like terms: 100 + -28 = 72
2x2 = 72

Divide each side by '2'.
x2 = 36

Simplifying
x2 = 36

Take the square root of each side:
x = {-6, 6}