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Simplifying
2b2 + -9 = 39
Reorder the terms:
-9 + 2b2 = 39
Solving
-9 + 2b2 = 39
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 + 2b2 = 39 + 9
Combine like terms: -9 + 9 = 0
0 + 2b2 = 39 + 9
2b2 = 39 + 9
Combine like terms: 39 + 9 = 48
2b2 = 48
Divide each side by '2'.
b2 = 24
Simplifying
b2 = 24
Take the square root of each side:
b = {-4.898979486, 4.898979486}
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