2x^2+x^2-176=0

Solution for 2x^2+x^2-176=0 equation:

Simplifying
2x2 + x2 + -176 = 0

Reorder the terms:
-176 + 2x2 + x2 = 0

Combine like terms: 2x2 + x2 = 3x2
-176 + 3x2 = 0

Solving
-176 + 3x2 = 0

Solving for variable 'x'.

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

Add '176' to each side of the equation.
-176 + 176 + 3x2 = 0 + 176

Combine like terms: -176 + 176 = 0
0 + 3x2 = 0 + 176
3x2 = 0 + 176

Combine like terms: 0 + 176 = 176
3x2 = 176

Divide each side by '3'.
x2 = 58.66666667

Simplifying
x2 = 58.66666667

Take the square root of each side:
x = {-7.659416862, 7.659416862}