1.00x+0.05x(12-x)=0.10(63)

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Solution for 1.00x+0.05x(12-x)=0.10(63) equation:


Simplifying
1.00x + 0.05x(12 + -1x) = 0.10(63)
1.00x + (12 * 0.05x + -1x * 0.05x) = 0.10(63)
1.00x + (0.6x + -0.05x2) = 0.10(63)

Combine like terms: 1.00x + 0.6x = 1.6x
1.6x + -0.05x2 = 0.10(63)

Multiply 0.10 * 63
1.6x + -0.05x2 = 6.3

Solving
1.6x + -0.05x2 = 6.3

Solving for variable 'x'.

Reorder the terms:
-6.3 + 1.6x + -0.05x2 = 6.3 + -6.3

Combine like terms: 6.3 + -6.3 = 0.0
-6.3 + 1.6x + -0.05x2 = 0.0

Begin completing the square.  Divide all terms by
-0.05 the coefficient of the squared term: 

Divide each side by '-0.05'.
126 + -32x + x2 = 0

Move the constant term to the right:

Add '-126' to each side of the equation.
126 + -32x + -126 + x2 = 0 + -126

Reorder the terms:
126 + -126 + -32x + x2 = 0 + -126

Combine like terms: 126 + -126 = 0
0 + -32x + x2 = 0 + -126
-32x + x2 = 0 + -126

Combine like terms: 0 + -126 = -126
-32x + x2 = -126

The x term is -32x.  Take half its coefficient (-16).
Square it (256) and add it to both sides.

Add '256' to each side of the equation.
-32x + 256 + x2 = -126 + 256

Reorder the terms:
256 + -32x + x2 = -126 + 256

Combine like terms: -126 + 256 = 130
256 + -32x + x2 = 130

Factor a perfect square on the left side:
(x + -16)(x + -16) = 130

Calculate the square root of the right side: 11.401754251

Break this problem into two subproblems by setting 
(x + -16) equal to 11.401754251 and -11.401754251.

Subproblem 1

x + -16 = 11.401754251 Simplifying x + -16 = 11.401754251 Reorder the terms: -16 + x = 11.401754251 Solving -16 + x = 11.401754251 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x = 11.401754251 + 16 Combine like terms: -16 + 16 = 0 0 + x = 11.401754251 + 16 x = 11.401754251 + 16 Combine like terms: 11.401754251 + 16 = 27.401754251 x = 27.401754251 Simplifying x = 27.401754251

Subproblem 2

x + -16 = -11.401754251 Simplifying x + -16 = -11.401754251 Reorder the terms: -16 + x = -11.401754251 Solving -16 + x = -11.401754251 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x = -11.401754251 + 16 Combine like terms: -16 + 16 = 0 0 + x = -11.401754251 + 16 x = -11.401754251 + 16 Combine like terms: -11.401754251 + 16 = 4.598245749 x = 4.598245749 Simplifying x = 4.598245749

Solution

The solution to the problem is based on the solutions from the subproblems. x = {27.401754251, 4.598245749}

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