y^3-13y^2=-42y

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Solution for y^3-13y^2=-42y equation:


Simplifying
y3 + -13y2 = -42y

Reorder the terms:
-13y2 + y3 = -42y

Solving
-13y2 + y3 = -42y

Solving for variable 'y'.

Reorder the terms:
42y + -13y2 + y3 = -42y + 42y

Combine like terms: -42y + 42y = 0
42y + -13y2 + y3 = 0

Factor out the Greatest Common Factor (GCF), 'y'.
y(42 + -13y + y2) = 0

Factor a trinomial.
y((6 + -1y)(7 + -1y)) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(6 + -1y)' equal to zero and attempt to solve: Simplifying 6 + -1y = 0 Solving 6 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1y = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1y = 0 + -6 -1y = 0 + -6 Combine like terms: 0 + -6 = -6 -1y = -6 Divide each side by '-1'. y = 6 Simplifying y = 6

Subproblem 3

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

Solution

y = {0, 6, 7}

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