(3-x)2=30

Solution for (3-x)2=30 equation:

Simplifying
(3 + -1x) * 2 = 30

Reorder the terms for easier multiplication:
2(3 + -1x) = 30
(3 * 2 + -1x * 2) = 30
(6 + -2x) = 30

Solving
6 + -2x = 30

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + -2x = 30 + -6

Combine like terms: 6 + -6 = 0
0 + -2x = 30 + -6
-2x = 30 + -6

Combine like terms: 30 + -6 = 24
-2x = 24

Divide each side by '-2'.
x = -12

Simplifying
x = -12