3x(8x+9)=4-5x

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Solution for 3x(8x+9)=4-5x equation:


Simplifying
3x(8x + 9) = 4 + -5x

Reorder the terms:
3x(9 + 8x) = 4 + -5x
(9 * 3x + 8x * 3x) = 4 + -5x
(27x + 24x2) = 4 + -5x

Solving
27x + 24x2 = 4 + -5x

Solving for variable 'x'.

Reorder the terms:
-4 + 27x + 5x + 24x2 = 4 + -5x + -4 + 5x

Combine like terms: 27x + 5x = 32x
-4 + 32x + 24x2 = 4 + -5x + -4 + 5x

Reorder the terms:
-4 + 32x + 24x2 = 4 + -4 + -5x + 5x

Combine like terms: 4 + -4 = 0
-4 + 32x + 24x2 = 0 + -5x + 5x
-4 + 32x + 24x2 = -5x + 5x

Combine like terms: -5x + 5x = 0
-4 + 32x + 24x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-1 + 8x + 6x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-1 + 8x + 6x2)' equal to zero and attempt to solve: Simplifying -1 + 8x + 6x2 = 0 Solving -1 + 8x + 6x2 = 0 Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -0.1666666667 + 1.333333333x + x2 = 0 Move the constant term to the right: Add '0.1666666667' to each side of the equation. -0.1666666667 + 1.333333333x + 0.1666666667 + x2 = 0 + 0.1666666667 Reorder the terms: -0.1666666667 + 0.1666666667 + 1.333333333x + x2 = 0 + 0.1666666667 Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000 0.0000000000 + 1.333333333x + x2 = 0 + 0.1666666667 1.333333333x + x2 = 0 + 0.1666666667 Combine like terms: 0 + 0.1666666667 = 0.1666666667 1.333333333x + x2 = 0.1666666667 The x term is 1.333333333x. Take half its coefficient (0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. 1.333333333x + 0.4444444442 + x2 = 0.1666666667 + 0.4444444442 Reorder the terms: 0.4444444442 + 1.333333333x + x2 = 0.1666666667 + 0.4444444442 Combine like terms: 0.1666666667 + 0.4444444442 = 0.6111111109 0.4444444442 + 1.333333333x + x2 = 0.6111111109 Factor a perfect square on the left side: (x + 0.6666666665)(x + 0.6666666665) = 0.6111111109 Calculate the square root of the right side: 0.78173596 Break this problem into two subproblems by setting (x + 0.6666666665) equal to 0.78173596 and -0.78173596.

Subproblem 1

x + 0.6666666665 = 0.78173596 Simplifying x + 0.6666666665 = 0.78173596 Reorder the terms: 0.6666666665 + x = 0.78173596 Solving 0.6666666665 + x = 0.78173596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = 0.78173596 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = 0.78173596 + -0.6666666665 x = 0.78173596 + -0.6666666665 Combine like terms: 0.78173596 + -0.6666666665 = 0.1150692935 x = 0.1150692935 Simplifying x = 0.1150692935

Subproblem 2

x + 0.6666666665 = -0.78173596 Simplifying x + 0.6666666665 = -0.78173596 Reorder the terms: 0.6666666665 + x = -0.78173596 Solving 0.6666666665 + x = -0.78173596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = -0.78173596 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = -0.78173596 + -0.6666666665 x = -0.78173596 + -0.6666666665 Combine like terms: -0.78173596 + -0.6666666665 = -1.4484026265 x = -1.4484026265 Simplifying x = -1.4484026265

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1150692935, -1.4484026265}

Solution

x = {0.1150692935, -1.4484026265}

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