5b^2-9=11

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Solution for 5b^2-9=11 equation: 


Simplifying
5b2 + -9 = 11

Reorder the terms:
-9 + 5b2 = 11

Solving
-9 + 5b2 = 11

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 + 5b2 = 11 + 9

Combine like terms: -9 + 9 = 0
0 + 5b2 = 11 + 9
5b2 = 11 + 9

Combine like terms: 11 + 9 = 20
5b2 = 20

Divide each side by '5'.
b2 = 4

Simplifying
b2 = 4

Take the square root of each side:
b = {-2, 2}

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