5x^2+20=100

Solution for 5x^2+20=100 equation:

Simplifying
5x2 + 20 = 100

Reorder the terms:
20 + 5x2 = 100

Solving
20 + 5x2 = 100

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 5x2 = 100 + -20

Combine like terms: 20 + -20 = 0
0 + 5x2 = 100 + -20
5x2 = 100 + -20

Combine like terms: 100 + -20 = 80
5x2 = 80

Divide each side by '5'.
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}