x^2-bx+9=0

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


Simplifying
x2 + -1bx + 9 = 0

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

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

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

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

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

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

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

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

Simplifying
b = 9x-1 + x

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