p(x)=x^4+3x^3-9x^2-15x+20

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Solution for p(x)=x^4+3x^3-9x^2-15x+20 equation: 


Simplifying
p(x) = x4 + 3x3 + -9x2 + -15x + 20

Multiply p * x
px = x4 + 3x3 + -9x2 + -15x + 20

Reorder the terms:
px = 20 + -15x + -9x2 + 3x3 + x4

Solving
px = 20 + -15x + -9x2 + 3x3 + x4

Solving for variable 'p'.

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

Divide each side by 'x'.
p = 20x-1 + -15 + -9x + 3x2 + x3

Simplifying
p = 20x-1 + -15 + -9x + 3x2 + x3

Reorder the terms:
p = -15 + 20x-1 + -9x + 3x2 + x3

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