x^2-x-b=0

Solution for x^2-x-b=0 equation:

Simplifying
x2 + -1x + -1b = 0

Reorder the terms:
-1b + -1x + x2 = 0

Solving
-1b + -1x + x2 = 0

Solving for variable 'b'.

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

Add 'x' to each side of the equation.
-1b + -1x + x + x2 = 0 + x

Combine like terms: -1x + x = 0
-1b + 0 + x2 = 0 + x
-1b + x2 = 0 + x
Remove the zero:
-1b + x2 = x

Add '-1x2' to each side of the equation.
-1b + x2 + -1x2 = x + -1x2

Combine like terms: x2 + -1x2 = 0
-1b + 0 = x + -1x2
-1b = x + -1x2

Divide each side by '-1'.
b = -1x + x2

Simplifying
b = -1x + x2