3x^2+11=42

Solution for 3x^2+11=42 equation:

Simplifying
3x2 + 11 = 42

Reorder the terms:
11 + 3x2 = 42

Solving
11 + 3x2 = 42

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + 3x2 = 42 + -11

Combine like terms: 11 + -11 = 0
0 + 3x2 = 42 + -11
3x2 = 42 + -11

Combine like terms: 42 + -11 = 31
3x2 = 31

Divide each side by '3'.
x2 = 10.33333333

Simplifying
x2 = 10.33333333

Take the square root of each side:
x = {-3.214550253, 3.214550253}