(X-3)2-20=o

Solution for (X-3)2-20=o equation:

Simplifying
(X + -3) * 2 + -20 = o

Reorder the terms:
(-3 + X) * 2 + -20 = o

Reorder the terms for easier multiplication:
2(-3 + X) + -20 = o
(-3 * 2 + X * 2) + -20 = o
(-6 + 2X) + -20 = o

Reorder the terms:
-6 + -20 + 2X = o

Combine like terms: -6 + -20 = -26
-26 + 2X = o

Solving
-26 + 2X = o

Solving for variable 'X'.

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

Add '26' to each side of the equation.
-26 + 26 + 2X = 26 + o

Combine like terms: -26 + 26 = 0
0 + 2X = 26 + o
2X = 26 + o

Divide each side by '2'.
X = 13 + 0.5o

Simplifying
X = 13 + 0.5o