2x^2-bx-9=0

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Solution for 2x^2-bx-9=0 equation:


Simplifying
2x2 + -1bx + -9 = 0

Reorder the terms:
-9 + -1bx + 2x2 = 0

Solving
-9 + -1bx + 2x2 = 0

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 + -1bx + 9 + 2x2 = 0 + 9

Reorder the terms:
-9 + 9 + -1bx + 2x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -1bx + 2x2 = 0 + 9
-1bx + 2x2 = 0 + 9

Combine like terms: 0 + 9 = 9
-1bx + 2x2 = 9

Add '-2x2' to each side of the equation.
-1bx + 2x2 + -2x2 = 9 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-1bx + 0 = 9 + -2x2
-1bx = 9 + -2x2

Divide each side by '-1x'.
b = -9x-1 + 2x

Simplifying
b = -9x-1 + 2x

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