-4x[5x^2-2x-8]=

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Solution for -4x[5x^2-2x-8]= equation:


Simplifying
-4x[5x2 + -2x + -8] = 0

Reorder the terms:
-4x[-8 + -2x + 5x2] = 0
[-8 * -4x + -2x * -4x + 5x2 * -4x] = 0
[32x + 8x2 + -20x3] = 0

Solving
32x + 8x2 + -20x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4x'.
4x(8 + 2x + -5x2) = 0

Ignore the factor 4.

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 '(8 + 2x + -5x2)' equal to zero and attempt to solve: Simplifying 8 + 2x + -5x2 = 0 Solving 8 + 2x + -5x2 = 0 Begin completing the square. Divide all terms by -5 the coefficient of the squared term: Divide each side by '-5'. -1.6 + -0.4x + x2 = 0 Move the constant term to the right: Add '1.6' to each side of the equation. -1.6 + -0.4x + 1.6 + x2 = 0 + 1.6 Reorder the terms: -1.6 + 1.6 + -0.4x + x2 = 0 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + -0.4x + x2 = 0 + 1.6 -0.4x + x2 = 0 + 1.6 Combine like terms: 0 + 1.6 = 1.6 -0.4x + x2 = 1.6 The x term is -0.4x. Take half its coefficient (-0.2). Square it (0.04) and add it to both sides. Add '0.04' to each side of the equation. -0.4x + 0.04 + x2 = 1.6 + 0.04 Reorder the terms: 0.04 + -0.4x + x2 = 1.6 + 0.04 Combine like terms: 1.6 + 0.04 = 1.64 0.04 + -0.4x + x2 = 1.64 Factor a perfect square on the left side: (x + -0.2)(x + -0.2) = 1.64 Calculate the square root of the right side: 1.280624847 Break this problem into two subproblems by setting (x + -0.2) equal to 1.280624847 and -1.280624847.

Subproblem 1

x + -0.2 = 1.280624847 Simplifying x + -0.2 = 1.280624847 Reorder the terms: -0.2 + x = 1.280624847 Solving -0.2 + x = 1.280624847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = 1.280624847 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = 1.280624847 + 0.2 x = 1.280624847 + 0.2 Combine like terms: 1.280624847 + 0.2 = 1.480624847 x = 1.480624847 Simplifying x = 1.480624847

Subproblem 2

x + -0.2 = -1.280624847 Simplifying x + -0.2 = -1.280624847 Reorder the terms: -0.2 + x = -1.280624847 Solving -0.2 + x = -1.280624847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + x = -1.280624847 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + x = -1.280624847 + 0.2 x = -1.280624847 + 0.2 Combine like terms: -1.280624847 + 0.2 = -1.080624847 x = -1.080624847 Simplifying x = -1.080624847

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.480624847, -1.080624847}

Solution

x = {0, 1.480624847, -1.080624847}

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