-5x(3x-4)=-29+8x

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Solution for -5x(3x-4)=-29+8x equation:


Simplifying
-5x(3x + -4) = -29 + 8x

Reorder the terms:
-5x(-4 + 3x) = -29 + 8x
(-4 * -5x + 3x * -5x) = -29 + 8x
(20x + -15x2) = -29 + 8x

Solving
20x + -15x2 = -29 + 8x

Solving for variable 'x'.

Reorder the terms:
29 + 20x + -8x + -15x2 = -29 + 8x + 29 + -8x

Combine like terms: 20x + -8x = 12x
29 + 12x + -15x2 = -29 + 8x + 29 + -8x

Reorder the terms:
29 + 12x + -15x2 = -29 + 29 + 8x + -8x

Combine like terms: -29 + 29 = 0
29 + 12x + -15x2 = 0 + 8x + -8x
29 + 12x + -15x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
29 + 12x + -15x2 = 0

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
-1.933333333 + -0.8x + x2 = 0

Move the constant term to the right:

Add '1.933333333' to each side of the equation.
-1.933333333 + -0.8x + 1.933333333 + x2 = 0 + 1.933333333

Reorder the terms:
-1.933333333 + 1.933333333 + -0.8x + x2 = 0 + 1.933333333

Combine like terms: -1.933333333 + 1.933333333 = 0.000000000
0.000000000 + -0.8x + x2 = 0 + 1.933333333
-0.8x + x2 = 0 + 1.933333333

Combine like terms: 0 + 1.933333333 = 1.933333333
-0.8x + x2 = 1.933333333

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = 1.933333333 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = 1.933333333 + 0.16

Combine like terms: 1.933333333 + 0.16 = 2.093333333
0.16 + -0.8x + x2 = 2.093333333

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 2.093333333

Calculate the square root of the right side: 1.446835627

Break this problem into two subproblems by setting 
(x + -0.4) equal to 1.446835627 and -1.446835627.

Subproblem 1

x + -0.4 = 1.446835627 Simplifying x + -0.4 = 1.446835627 Reorder the terms: -0.4 + x = 1.446835627 Solving -0.4 + x = 1.446835627 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 1.446835627 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 1.446835627 + 0.4 x = 1.446835627 + 0.4 Combine like terms: 1.446835627 + 0.4 = 1.846835627 x = 1.846835627 Simplifying x = 1.846835627

Subproblem 2

x + -0.4 = -1.446835627 Simplifying x + -0.4 = -1.446835627 Reorder the terms: -0.4 + x = -1.446835627 Solving -0.4 + x = -1.446835627 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -1.446835627 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -1.446835627 + 0.4 x = -1.446835627 + 0.4 Combine like terms: -1.446835627 + 0.4 = -1.046835627 x = -1.046835627 Simplifying x = -1.046835627

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.846835627, -1.046835627}

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