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Simplifying
8b2 + -9 = 791
Reorder the terms:
-9 + 8b2 = 791
Solving
-9 + 8b2 = 791
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 + 8b2 = 791 + 9
Combine like terms: -9 + 9 = 0
0 + 8b2 = 791 + 9
8b2 = 791 + 9
Combine like terms: 791 + 9 = 800
8b2 = 800
Divide each side by '8'.
b2 = 100
Simplifying
b2 = 100
Take the square root of each side:
b = {-10, 10}
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