7x^2+14=42

Solution for 7x^2+14=42 equation:

Simplifying
7x2 + 14 = 42

Reorder the terms:
14 + 7x2 = 42

Solving
14 + 7x2 = 42

Solving for variable 'x'.

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

Add '-14' to each side of the equation.
14 + -14 + 7x2 = 42 + -14

Combine like terms: 14 + -14 = 0
0 + 7x2 = 42 + -14
7x2 = 42 + -14

Combine like terms: 42 + -14 = 28
7x2 = 28

Divide each side by '7'.
x2 = 4

Simplifying
x2 = 4

Take the square root of each side:
x = {-2, 2}