8x^2+16=42

Solution for 8x^2+16=42 equation:

Simplifying
8x2 + 16 = 42

Reorder the terms:
16 + 8x2 = 42

Solving
16 + 8x2 = 42

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 8x2 = 42 + -16

Combine like terms: 16 + -16 = 0
0 + 8x2 = 42 + -16
8x2 = 42 + -16

Combine like terms: 42 + -16 = 26
8x2 = 26

Divide each side by '8'.
x2 = 3.25

Simplifying
x2 = 3.25

Take the square root of each side:
x = {-1.802775638, 1.802775638}