2b^2-9=125

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Solution for 2b^2-9=125 equation:


Simplifying
2b2 + -9 = 125

Reorder the terms:
-9 + 2b2 = 125

Solving
-9 + 2b2 = 125

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 = 125 + 9

Combine like terms: -9 + 9 = 0
0 + 2b2 = 125 + 9
2b2 = 125 + 9

Combine like terms: 125 + 9 = 134
2b2 = 134

Divide each side by '2'.
b2 = 67

Simplifying
b2 = 67

Take the square root of each side:
b = {-8.185352772, 8.185352772}

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