x^3+15x^2=x^2-49x

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Solution for x^3+15x^2=x^2-49x equation:


Simplifying
x3 + 15x2 = x2 + -49x

Reorder the terms:
15x2 + x3 = x2 + -49x

Reorder the terms:
15x2 + x3 = -49x + x2

Solving
15x2 + x3 = -49x + x2

Solving for variable 'x'.

Reorder the terms:
49x + 15x2 + -1x2 + x3 = -49x + x2 + 49x + -1x2

Combine like terms: 15x2 + -1x2 = 14x2
49x + 14x2 + x3 = -49x + x2 + 49x + -1x2

Reorder the terms:
49x + 14x2 + x3 = -49x + 49x + x2 + -1x2

Combine like terms: -49x + 49x = 0
49x + 14x2 + x3 = 0 + x2 + -1x2
49x + 14x2 + x3 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
49x + 14x2 + x3 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(49 + 14x + x2) = 0

Factor a trinomial.
x((7 + x)(7 + x)) = 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 '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Subproblem 3

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 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 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

Solution

x = {0, -7, -7}

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