2b^2-B-21=0

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Solution for 2b^2-B-21=0 equation:


Simplifying
2b2 + -1B + -21 = 0

Reorder the terms:
-21 + -1B + 2b2 = 0

Solving
-21 + -1B + 2b2 = 0

Solving for variable 'B'.

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

Add '21' to each side of the equation.
-21 + -1B + 21 + 2b2 = 0 + 21

Reorder the terms:
-21 + 21 + -1B + 2b2 = 0 + 21

Combine like terms: -21 + 21 = 0
0 + -1B + 2b2 = 0 + 21
-1B + 2b2 = 0 + 21

Combine like terms: 0 + 21 = 21
-1B + 2b2 = 21

Add '-2b2' to each side of the equation.
-1B + 2b2 + -2b2 = 21 + -2b2

Combine like terms: 2b2 + -2b2 = 0
-1B + 0 = 21 + -2b2
-1B = 21 + -2b2

Divide each side by '-1'.
B = -21 + 2b2

Simplifying
B = -21 + 2b2

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