3x^2+7-20=0

Solution for 3x^2+7-20=0 equation:

Simplifying
3x2 + 7 + -20 = 0

Reorder the terms:
7 + -20 + 3x2 = 0

Combine like terms: 7 + -20 = -13
-13 + 3x2 = 0

Solving
-13 + 3x2 = 0

Solving for variable 'x'.

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

Add '13' to each side of the equation.
-13 + 13 + 3x2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + 3x2 = 0 + 13
3x2 = 0 + 13

Combine like terms: 0 + 13 = 13
3x2 = 13

Divide each side by '3'.
x2 = 4.333333333

Simplifying
x2 = 4.333333333

Take the square root of each side:
x = {-2.081665999, 2.081665999}