-7x^6-21x^5+126x^4=

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Solution for -7x^6-21x^5+126x^4= equation:


Simplifying
-7x6 + -21x5 + 126x4 = 0

Reorder the terms:
126x4 + -21x5 + -7x6 = 0

Solving
126x4 + -21x5 + -7x6 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7x4'.
7x4(18 + -3x + -1x2) = 0

Factor a trinomial.
7x4((3 + -1x)(6 + x)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'x4' equal to zero and attempt to solve: Simplifying x4 = 0 Solving x4 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x4 = 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 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 3

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

Solution

x = {3, -6}

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