3-10x(6-5x)=7x-16+3x

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Solution for 3-10x(6-5x)=7x-16+3x equation:


Simplifying
3 + -10x(6 + -5x) = 7x + -16 + 3x
3 + (6 * -10x + -5x * -10x) = 7x + -16 + 3x
3 + (-60x + 50x2) = 7x + -16 + 3x

Reorder the terms:
3 + -60x + 50x2 = -16 + 7x + 3x

Combine like terms: 7x + 3x = 10x
3 + -60x + 50x2 = -16 + 10x

Solving
3 + -60x + 50x2 = -16 + 10x

Solving for variable 'x'.

Reorder the terms:
3 + 16 + -60x + -10x + 50x2 = -16 + 10x + 16 + -10x

Combine like terms: 3 + 16 = 19
19 + -60x + -10x + 50x2 = -16 + 10x + 16 + -10x

Combine like terms: -60x + -10x = -70x
19 + -70x + 50x2 = -16 + 10x + 16 + -10x

Reorder the terms:
19 + -70x + 50x2 = -16 + 16 + 10x + -10x

Combine like terms: -16 + 16 = 0
19 + -70x + 50x2 = 0 + 10x + -10x
19 + -70x + 50x2 = 10x + -10x

Combine like terms: 10x + -10x = 0
19 + -70x + 50x2 = 0

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

Divide each side by '50'.
0.38 + -1.4x + x2 = 0

Move the constant term to the right:

Add '-0.38' to each side of the equation.
0.38 + -1.4x + -0.38 + x2 = 0 + -0.38

Reorder the terms:
0.38 + -0.38 + -1.4x + x2 = 0 + -0.38

Combine like terms: 0.38 + -0.38 = 0.00
0.00 + -1.4x + x2 = 0 + -0.38
-1.4x + x2 = 0 + -0.38

Combine like terms: 0 + -0.38 = -0.38
-1.4x + x2 = -0.38

The x term is -1.4x.  Take half its coefficient (-0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
-1.4x + 0.49 + x2 = -0.38 + 0.49

Reorder the terms:
0.49 + -1.4x + x2 = -0.38 + 0.49

Combine like terms: -0.38 + 0.49 = 0.11
0.49 + -1.4x + x2 = 0.11

Factor a perfect square on the left side:
(x + -0.7)(x + -0.7) = 0.11

Calculate the square root of the right side: 0.331662479

Break this problem into two subproblems by setting 
(x + -0.7) equal to 0.331662479 and -0.331662479.

Subproblem 1

x + -0.7 = 0.331662479 Simplifying x + -0.7 = 0.331662479 Reorder the terms: -0.7 + x = 0.331662479 Solving -0.7 + x = 0.331662479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = 0.331662479 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = 0.331662479 + 0.7 x = 0.331662479 + 0.7 Combine like terms: 0.331662479 + 0.7 = 1.031662479 x = 1.031662479 Simplifying x = 1.031662479

Subproblem 2

x + -0.7 = -0.331662479 Simplifying x + -0.7 = -0.331662479 Reorder the terms: -0.7 + x = -0.331662479 Solving -0.7 + x = -0.331662479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.7' to each side of the equation. -0.7 + 0.7 + x = -0.331662479 + 0.7 Combine like terms: -0.7 + 0.7 = 0.0 0.0 + x = -0.331662479 + 0.7 x = -0.331662479 + 0.7 Combine like terms: -0.331662479 + 0.7 = 0.368337521 x = 0.368337521 Simplifying x = 0.368337521

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.031662479, 0.368337521}

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