(6x-5)(4x+10)=175

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Solution for (6x-5)(4x+10)=175 equation:


Simplifying
(6x + -5)(4x + 10) = 175

Reorder the terms:
(-5 + 6x)(4x + 10) = 175

Reorder the terms:
(-5 + 6x)(10 + 4x) = 175

Multiply (-5 + 6x) * (10 + 4x)
(-5(10 + 4x) + 6x * (10 + 4x)) = 175
((10 * -5 + 4x * -5) + 6x * (10 + 4x)) = 175
((-50 + -20x) + 6x * (10 + 4x)) = 175
(-50 + -20x + (10 * 6x + 4x * 6x)) = 175
(-50 + -20x + (60x + 24x2)) = 175

Combine like terms: -20x + 60x = 40x
(-50 + 40x + 24x2) = 175

Solving
-50 + 40x + 24x2 = 175

Solving for variable 'x'.

Reorder the terms:
-50 + -175 + 40x + 24x2 = 175 + -175

Combine like terms: -50 + -175 = -225
-225 + 40x + 24x2 = 175 + -175

Combine like terms: 175 + -175 = 0
-225 + 40x + 24x2 = 0

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

Divide each side by '24'.
-9.375 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '9.375' to each side of the equation.
-9.375 + 1.666666667x + 9.375 + x2 = 0 + 9.375

Reorder the terms:
-9.375 + 9.375 + 1.666666667x + x2 = 0 + 9.375

Combine like terms: -9.375 + 9.375 = 0.000
0.000 + 1.666666667x + x2 = 0 + 9.375
1.666666667x + x2 = 0 + 9.375

Combine like terms: 0 + 9.375 = 9.375
1.666666667x + x2 = 9.375

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = 9.375 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = 9.375 + 0.6944444447

Combine like terms: 9.375 + 0.6944444447 = 10.0694444447
0.6944444447 + 1.666666667x + x2 = 10.0694444447

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = 10.0694444447

Calculate the square root of the right side: 3.173238794

Break this problem into two subproblems by setting 
(x + 0.8333333335) equal to 3.173238794 and -3.173238794.

Subproblem 1

x + 0.8333333335 = 3.173238794 Simplifying x + 0.8333333335 = 3.173238794 Reorder the terms: 0.8333333335 + x = 3.173238794 Solving 0.8333333335 + x = 3.173238794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = 3.173238794 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = 3.173238794 + -0.8333333335 x = 3.173238794 + -0.8333333335 Combine like terms: 3.173238794 + -0.8333333335 = 2.3399054605 x = 2.3399054605 Simplifying x = 2.3399054605

Subproblem 2

x + 0.8333333335 = -3.173238794 Simplifying x + 0.8333333335 = -3.173238794 Reorder the terms: 0.8333333335 + x = -3.173238794 Solving 0.8333333335 + x = -3.173238794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = -3.173238794 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = -3.173238794 + -0.8333333335 x = -3.173238794 + -0.8333333335 Combine like terms: -3.173238794 + -0.8333333335 = -4.0065721275 x = -4.0065721275 Simplifying x = -4.0065721275

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.3399054605, -4.0065721275}

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