3x^2-x^2+4=5

Solution for 3x^2-x^2+4=5 equation:

Simplifying
3x2 + -1x2 + 4 = 5

Reorder the terms:
4 + 3x2 + -1x2 = 5

Combine like terms: 3x2 + -1x2 = 2x2
4 + 2x2 = 5

Solving
4 + 2x2 = 5

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 2x2 = 5 + -4

Combine like terms: 4 + -4 = 0
0 + 2x2 = 5 + -4
2x2 = 5 + -4

Combine like terms: 5 + -4 = 1
2x2 = 1

Divide each side by '2'.
x2 = 0.5

Simplifying
x2 = 0.5

Take the square root of each side:
x = {-0.707106781, 0.707106781}