B^2+4=13

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Solution for B^2+4=13 equation: 


Simplifying
B2 + 4 = 13

Reorder the terms:
4 + B2 = 13

Solving
4 + B2 = 13

Solving for variable 'B'.

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

Add '-4' to each side of the equation.
4 + -4 + B2 = 13 + -4

Combine like terms: 4 + -4 = 0
0 + B2 = 13 + -4
B2 = 13 + -4

Combine like terms: 13 + -4 = 9
B2 = 9

Simplifying
B2 = 9

Take the square root of each side:
B = {-3, 3}

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