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

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


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

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

Solving
3 + -60x + 50x2 = -16 + 7x

Solving for variable 'x'.

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

Combine like terms: 3 + 16 = 19
19 + -60x + -7x + 50x2 = -16 + 7x + 16 + -7x

Combine like terms: -60x + -7x = -67x
19 + -67x + 50x2 = -16 + 7x + 16 + -7x

Reorder the terms:
19 + -67x + 50x2 = -16 + 16 + 7x + -7x

Combine like terms: -16 + 16 = 0
19 + -67x + 50x2 = 0 + 7x + -7x
19 + -67x + 50x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
19 + -67x + 50x2 = 0

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

Divide each side by '50'.
0.38 + -1.34x + x2 = 0.0

Move the constant term to the right:

Add '-0.38' to each side of the equation.
0.38 + -1.34x + -0.38 + x2 = 0.0 + -0.38

Reorder the terms:
0.38 + -0.38 + -1.34x + x2 = 0.0 + -0.38

Combine like terms: 0.38 + -0.38 = 0.00
0.00 + -1.34x + x2 = 0.0 + -0.38
-1.34x + x2 = 0.0 + -0.38

Combine like terms: 0.0 + -0.38 = -0.38
-1.34x + x2 = -0.38

The x term is -1.34x.  Take half its coefficient (-0.67).
Square it (0.4489) and add it to both sides.

Add '0.4489' to each side of the equation.
-1.34x + 0.4489 + x2 = -0.38 + 0.4489

Reorder the terms:
0.4489 + -1.34x + x2 = -0.38 + 0.4489

Combine like terms: -0.38 + 0.4489 = 0.0689
0.4489 + -1.34x + x2 = 0.0689

Factor a perfect square on the left side:
(x + -0.67)(x + -0.67) = 0.0689

Calculate the square root of the right side: 0.262488095

Break this problem into two subproblems by setting 
(x + -0.67) equal to 0.262488095 and -0.262488095.

Subproblem 1

x + -0.67 = 0.262488095 Simplifying x + -0.67 = 0.262488095 Reorder the terms: -0.67 + x = 0.262488095 Solving -0.67 + x = 0.262488095 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.67' to each side of the equation. -0.67 + 0.67 + x = 0.262488095 + 0.67 Combine like terms: -0.67 + 0.67 = 0.00 0.00 + x = 0.262488095 + 0.67 x = 0.262488095 + 0.67 Combine like terms: 0.262488095 + 0.67 = 0.932488095 x = 0.932488095 Simplifying x = 0.932488095

Subproblem 2

x + -0.67 = -0.262488095 Simplifying x + -0.67 = -0.262488095 Reorder the terms: -0.67 + x = -0.262488095 Solving -0.67 + x = -0.262488095 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.67' to each side of the equation. -0.67 + 0.67 + x = -0.262488095 + 0.67 Combine like terms: -0.67 + 0.67 = 0.00 0.00 + x = -0.262488095 + 0.67 x = -0.262488095 + 0.67 Combine like terms: -0.262488095 + 0.67 = 0.407511905 x = 0.407511905 Simplifying x = 0.407511905

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.932488095, 0.407511905}

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