-7z^3-42z^2+280z=0

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Solution for -7z^3-42z^2+280z=0 equation:


Simplifying
-7z3 + -42z2 + 280z = 0

Reorder the terms:
280z + -42z2 + -7z3 = 0

Solving
280z + -42z2 + -7z3 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '7z'.
7z(40 + -6z + -1z2) = 0

Factor a trinomial.
7z((4 + -1z)(10 + z)) = 0

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

Set the factor '(4 + -1z)' equal to zero and attempt to solve: Simplifying 4 + -1z = 0 Solving 4 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1z = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1z = 0 + -4 -1z = 0 + -4 Combine like terms: 0 + -4 = -4 -1z = -4 Divide each side by '-1'. z = 4 Simplifying z = 4

Subproblem 3

Set the factor '(10 + z)' equal to zero and attempt to solve: Simplifying 10 + z = 0 Solving 10 + z = 0 Move all terms containing z to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + z = 0 + -10 Combine like terms: 10 + -10 = 0 0 + z = 0 + -10 z = 0 + -10 Combine like terms: 0 + -10 = -10 z = -10 Simplifying z = -10

Solution

z = {0, 4, -10}

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