x^2+px-9=(x-1)(x+q)

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Solution for x^2+px-9=(x-1)(x+q) equation:


Simplifying
x2 + px + -9 = (x + -1)(x + q)

Reorder the terms:
-9 + px + x2 = (x + -1)(x + q)

Reorder the terms:
-9 + px + x2 = (-1 + x)(x + q)

Reorder the terms:
-9 + px + x2 = (-1 + x)(q + x)

Multiply (-1 + x) * (q + x)
-9 + px + x2 = (-1(q + x) + x(q + x))
-9 + px + x2 = ((q * -1 + x * -1) + x(q + x))
-9 + px + x2 = ((-1q + -1x) + x(q + x))
-9 + px + x2 = (-1q + -1x + (q * x + x * x))
-9 + px + x2 = (-1q + -1x + (qx + x2))

Reorder the terms:
-9 + px + x2 = (-1q + qx + -1x + x2)
-9 + px + x2 = (-1q + qx + -1x + x2)

Add '-1x2' to each side of the equation.
-9 + px + x2 + -1x2 = -1q + qx + -1x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 + px + 0 = -1q + qx + -1x + x2 + -1x2
-9 + px = -1q + qx + -1x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 + px = -1q + qx + -1x + 0
-9 + px = -1q + qx + -1x

Solving
-9 + px = -1q + qx + -1x

Solving for variable 'p'.

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

Add '9' to each side of the equation.
-9 + 9 + px = -1q + qx + 9 + -1x

Combine like terms: -9 + 9 = 0
0 + px = -1q + qx + 9 + -1x
px = -1q + qx + 9 + -1x

Reorder the terms:
px = 9 + -1q + qx + -1x

Divide each side by 'x'.
p = 9x-1 + -1qx-1 + q + -1

Simplifying
p = 9x-1 + -1qx-1 + q + -1

Reorder the terms:
p = -1 + q + -1qx-1 + 9x-1

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