(4x^3-4x^2+5x)+(4x^3+9x^2-12x)=

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Solution for (4x^3-4x^2+5x)+(4x^3+9x^2-12x)= equation:


Simplifying
(4x3 + -4x2 + 5x) + (4x3 + 9x2 + -12x) = 0

Reorder the terms:
(5x + -4x2 + 4x3) + (4x3 + 9x2 + -12x) = 0

Remove parenthesis around (5x + -4x2 + 4x3)
5x + -4x2 + 4x3 + (4x3 + 9x2 + -12x) = 0

Reorder the terms:
5x + -4x2 + 4x3 + (-12x + 9x2 + 4x3) = 0

Remove parenthesis around (-12x + 9x2 + 4x3)
5x + -4x2 + 4x3 + -12x + 9x2 + 4x3 = 0

Reorder the terms:
5x + -12x + -4x2 + 9x2 + 4x3 + 4x3 = 0

Combine like terms: 5x + -12x = -7x
-7x + -4x2 + 9x2 + 4x3 + 4x3 = 0

Combine like terms: -4x2 + 9x2 = 5x2
-7x + 5x2 + 4x3 + 4x3 = 0

Combine like terms: 4x3 + 4x3 = 8x3
-7x + 5x2 + 8x3 = 0

Solving
-7x + 5x2 + 8x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), 'x'.
x(-7 + 5x + 8x2) = 0

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 '(-7 + 5x + 8x2)' equal to zero and attempt to solve: Simplifying -7 + 5x + 8x2 = 0 Solving -7 + 5x + 8x2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. -0.875 + 0.625x + x2 = 0 Move the constant term to the right: Add '0.875' to each side of the equation. -0.875 + 0.625x + 0.875 + x2 = 0 + 0.875 Reorder the terms: -0.875 + 0.875 + 0.625x + x2 = 0 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + 0.625x + x2 = 0 + 0.875 0.625x + x2 = 0 + 0.875 Combine like terms: 0 + 0.875 = 0.875 0.625x + x2 = 0.875 The x term is 0.625x. Take half its coefficient (0.3125). Square it (0.09765625) and add it to both sides. Add '0.09765625' to each side of the equation. 0.625x + 0.09765625 + x2 = 0.875 + 0.09765625 Reorder the terms: 0.09765625 + 0.625x + x2 = 0.875 + 0.09765625 Combine like terms: 0.875 + 0.09765625 = 0.97265625 0.09765625 + 0.625x + x2 = 0.97265625 Factor a perfect square on the left side: (x + 0.3125)(x + 0.3125) = 0.97265625 Calculate the square root of the right side: 0.986233365 Break this problem into two subproblems by setting (x + 0.3125) equal to 0.986233365 and -0.986233365.

Subproblem 1

x + 0.3125 = 0.986233365 Simplifying x + 0.3125 = 0.986233365 Reorder the terms: 0.3125 + x = 0.986233365 Solving 0.3125 + x = 0.986233365 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3125' to each side of the equation. 0.3125 + -0.3125 + x = 0.986233365 + -0.3125 Combine like terms: 0.3125 + -0.3125 = 0.0000 0.0000 + x = 0.986233365 + -0.3125 x = 0.986233365 + -0.3125 Combine like terms: 0.986233365 + -0.3125 = 0.673733365 x = 0.673733365 Simplifying x = 0.673733365

Subproblem 2

x + 0.3125 = -0.986233365 Simplifying x + 0.3125 = -0.986233365 Reorder the terms: 0.3125 + x = -0.986233365 Solving 0.3125 + x = -0.986233365 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3125' to each side of the equation. 0.3125 + -0.3125 + x = -0.986233365 + -0.3125 Combine like terms: 0.3125 + -0.3125 = 0.0000 0.0000 + x = -0.986233365 + -0.3125 x = -0.986233365 + -0.3125 Combine like terms: -0.986233365 + -0.3125 = -1.298733365 x = -1.298733365 Simplifying x = -1.298733365

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.673733365, -1.298733365}

Solution

x = {0, 0.673733365, -1.298733365}

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