5x(x^2-5x-12)=0

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Solution for 5x(x^2-5x-12)=0 equation:


Simplifying
5x(x2 + -5x + -12) = 0

Reorder the terms:
5x(-12 + -5x + x2) = 0
(-12 * 5x + -5x * 5x + x2 * 5x) = 0
(-60x + -25x2 + 5x3) = 0

Solving
-60x + -25x2 + 5x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5x'.
5x(-12 + -5x + x2) = 0

Ignore the factor 5.

Subproblem 1

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

Subproblem 2

Set the factor '(-12 + -5x + x2)' equal to zero and attempt to solve: Simplifying -12 + -5x + x2 = 0 Solving -12 + -5x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '12' to each side of the equation. -12 + -5x + 12 + x2 = 0 + 12 Reorder the terms: -12 + 12 + -5x + x2 = 0 + 12 Combine like terms: -12 + 12 = 0 0 + -5x + x2 = 0 + 12 -5x + x2 = 0 + 12 Combine like terms: 0 + 12 = 12 -5x + x2 = 12 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = 12 + 6.25 Reorder the terms: 6.25 + -5x + x2 = 12 + 6.25 Combine like terms: 12 + 6.25 = 18.25 6.25 + -5x + x2 = 18.25 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = 18.25 Calculate the square root of the right side: 4.272001873 Break this problem into two subproblems by setting (x + -2.5) equal to 4.272001873 and -4.272001873.

Subproblem 1

x + -2.5 = 4.272001873 Simplifying x + -2.5 = 4.272001873 Reorder the terms: -2.5 + x = 4.272001873 Solving -2.5 + x = 4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 4.272001873 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 4.272001873 + 2.5 x = 4.272001873 + 2.5 Combine like terms: 4.272001873 + 2.5 = 6.772001873 x = 6.772001873 Simplifying x = 6.772001873

Subproblem 2

x + -2.5 = -4.272001873 Simplifying x + -2.5 = -4.272001873 Reorder the terms: -2.5 + x = -4.272001873 Solving -2.5 + x = -4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -4.272001873 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -4.272001873 + 2.5 x = -4.272001873 + 2.5 Combine like terms: -4.272001873 + 2.5 = -1.772001873 x = -1.772001873 Simplifying x = -1.772001873

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.772001873, -1.772001873}

Solution

x = {0, 6.772001873, -1.772001873}

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