0=x^4-11x^3+30x^2

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Solution for 0=x^4-11x^3+30x^2 equation:


Simplifying
0 = x4 + -11x3 + 30x2

Reorder the terms:
0 = 30x2 + -11x3 + x4

Solving
0 = 30x2 + -11x3 + x4

Solving for variable 'x'.
Remove the zero:
-30x2 + 11x3 + -1x4 = 30x2 + -11x3 + x4 + -30x2 + 11x3 + -1x4

Reorder the terms:
-30x2 + 11x3 + -1x4 = 30x2 + -30x2 + -11x3 + 11x3 + x4 + -1x4

Combine like terms: 30x2 + -30x2 = 0
-30x2 + 11x3 + -1x4 = 0 + -11x3 + 11x3 + x4 + -1x4
-30x2 + 11x3 + -1x4 = -11x3 + 11x3 + x4 + -1x4

Combine like terms: -11x3 + 11x3 = 0
-30x2 + 11x3 + -1x4 = 0 + x4 + -1x4
-30x2 + 11x3 + -1x4 = x4 + -1x4

Combine like terms: x4 + -1x4 = 0
-30x2 + 11x3 + -1x4 = 0

Factor out the Greatest Common Factor (GCF), 'x2'.
x2(-30 + 11x + -1x2) = 0

Factor a trinomial.
x2((-6 + x)(5 + -1x)) = 0

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

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

Subproblem 3

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Solution

x = {0, 6, 5}

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