(c+21)2=62

Solution for (c+21)2=62 equation:

Simplifying
(c + 21) * 2 = 62

Reorder the terms:
(21 + c) * 2 = 62

Reorder the terms for easier multiplication:
2(21 + c) = 62
(21 * 2 + c * 2) = 62
(42 + 2c) = 62

Solving
42 + 2c = 62

Solving for variable 'c'.

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

Add '-42' to each side of the equation.
42 + -42 + 2c = 62 + -42

Combine like terms: 42 + -42 = 0
0 + 2c = 62 + -42
2c = 62 + -42

Combine like terms: 62 + -42 = 20
2c = 20

Divide each side by '2'.
c = 10

Simplifying
c = 10