b^2-225=0

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Solution for b^2-225=0 equation: 


Simplifying
b2 + -225 = 0

Reorder the terms:
-225 + b2 = 0

Solving
-225 + b2 = 0

Solving for variable 'b'.

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

Add '225' to each side of the equation.
-225 + 225 + b2 = 0 + 225

Combine like terms: -225 + 225 = 0
0 + b2 = 0 + 225
b2 = 0 + 225

Combine like terms: 0 + 225 = 225
b2 = 225

Simplifying
b2 = 225

Take the square root of each side:
b = {-15, 15}

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