15x^2=x^3+56x

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Solution for 15x^2=x^3+56x equation:


Simplifying
15x2 = x3 + 56x

Reorder the terms:
15x2 = 56x + x3

Solving
15x2 = 56x + x3

Solving for variable 'x'.

Reorder the terms:
-56x + 15x2 + -1x3 = 56x + x3 + -56x + -1x3

Reorder the terms:
-56x + 15x2 + -1x3 = 56x + -56x + x3 + -1x3

Combine like terms: 56x + -56x = 0
-56x + 15x2 + -1x3 = 0 + x3 + -1x3
-56x + 15x2 + -1x3 = x3 + -1x3

Combine like terms: x3 + -1x3 = 0
-56x + 15x2 + -1x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-56 + 15x + -1x2) = 0

Factor a trinomial.
x((-8 + x)(7 + -1x)) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-8 + x)' equal to zero and attempt to solve: Simplifying -8 + x = 0 Solving -8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + x = 0 + 8 x = 0 + 8 Combine like terms: 0 + 8 = 8 x = 8 Simplifying x = 8

Subproblem 3

Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7

Solution

x = {0, 8, 7}

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