8x^3+px^2+qx-18=0

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Solution for 8x^3+px^2+qx-18=0 equation:


Simplifying
8x3 + px2 + qx + -18 = 0

Reorder the terms:
-18 + px2 + qx + 8x3 = 0

Solving
-18 + px2 + qx + 8x3 = 0

Solving for variable 'p'.

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

Add '18' to each side of the equation.
-18 + px2 + qx + 18 + 8x3 = 0 + 18

Reorder the terms:
-18 + 18 + px2 + qx + 8x3 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + px2 + qx + 8x3 = 0 + 18
px2 + qx + 8x3 = 0 + 18

Combine like terms: 0 + 18 = 18
px2 + qx + 8x3 = 18

Add '-1qx' to each side of the equation.
px2 + qx + -1qx + 8x3 = 18 + -1qx

Combine like terms: qx + -1qx = 0
px2 + 0 + 8x3 = 18 + -1qx
px2 + 8x3 = 18 + -1qx

Add '-8x3' to each side of the equation.
px2 + 8x3 + -8x3 = 18 + -1qx + -8x3

Combine like terms: 8x3 + -8x3 = 0
px2 + 0 = 18 + -1qx + -8x3
px2 = 18 + -1qx + -8x3

Divide each side by 'x2'.
p = 18x-2 + -1qx-1 + -8x

Simplifying
p = 18x-2 + -1qx-1 + -8x

Reorder the terms:
p = -1qx-1 + 18x-2 + -8x

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