x^2-b=-4

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Solution for x^2-b=-4 equation: 


Simplifying
x2 + -1b = -4

Reorder the terms:
-1b + x2 = -4

Solving
-1b + x2 = -4

Solving for variable 'b'.

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

Add '-1x2' to each side of the equation.
-1b + x2 + -1x2 = -4 + -1x2

Combine like terms: x2 + -1x2 = 0
-1b + 0 = -4 + -1x2
-1b = -4 + -1x2

Divide each side by '-1'.
b = 4 + x2

Simplifying
b = 4 + x2

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