42x^2+20-36=4

Solution for 42x^2+20-36=4 equation:

Simplifying
42x2 + 20 + -36 = 4

Reorder the terms:
20 + -36 + 42x2 = 4

Combine like terms: 20 + -36 = -16
-16 + 42x2 = 4

Solving
-16 + 42x2 = 4

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 + 42x2 = 4 + 16

Combine like terms: -16 + 16 = 0
0 + 42x2 = 4 + 16
42x2 = 4 + 16

Combine like terms: 4 + 16 = 20
42x2 = 20

Divide each side by '42'.
x2 = 0.4761904762

Simplifying
x2 = 0.4761904762

Take the square root of each side:
x = {-0.690065559, 0.690065559}