9-b^2=4

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Solution for 9-b^2=4 equation: 


Simplifying
9 + -1b2 = 4

Solving
9 + -1b2 = 4

Solving for variable 'b'.

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

Add '-9' to each side of the equation.
9 + -9 + -1b2 = 4 + -9

Combine like terms: 9 + -9 = 0
0 + -1b2 = 4 + -9
-1b2 = 4 + -9

Combine like terms: 4 + -9 = -5
-1b2 = -5

Divide each side by '-1'.
b2 = 5

Simplifying
b2 = 5

Take the square root of each side:
b = {-2.236067978, 2.236067978}

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