(b+9)2=4

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Solution for (b+9)2=4 equation:


Simplifying
(b + 9) * 2 = 4

Reorder the terms:
(9 + b) * 2 = 4

Reorder the terms for easier multiplication:
2(9 + b) = 4
(9 * 2 + b * 2) = 4
(18 + 2b) = 4

Solving
18 + 2b = 4

Solving for variable 'b'.

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

Add '-18' to each side of the equation.
18 + -18 + 2b = 4 + -18

Combine like terms: 18 + -18 = 0
0 + 2b = 4 + -18
2b = 4 + -18

Combine like terms: 4 + -18 = -14
2b = -14

Divide each side by '2'.
b = -7

Simplifying
b = -7

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