7z^7+14z^6-21z^5=

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Solution for 7z^7+14z^6-21z^5= equation:


Simplifying
7z7 + 14z6 + -21z5 = 0

Reorder the terms:
-21z5 + 14z6 + 7z7 = 0

Solving
-21z5 + 14z6 + 7z7 = 0

Solving for variable 'z'.

Factor out the Greatest Common Factor (GCF), '7z5'.
7z5(-3 + 2z + z2) = 0

Factor a trinomial.
7z5((-3 + -1z)(1 + -1z)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'z5' equal to zero and attempt to solve: Simplifying z5 = 0 Solving z5 = 0 Move all terms containing z to the left, all other terms to the right. Simplifying z5 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-3 + -1z)' equal to zero and attempt to solve: Simplifying -3 + -1z = 0 Solving -3 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1z = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1z = 0 + 3 -1z = 0 + 3 Combine like terms: 0 + 3 = 3 -1z = 3 Divide each side by '-1'. z = -3 Simplifying z = -3

Subproblem 3

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

Solution

z = {-3, 1}

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