48-x=4x(7x)

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Solution for 48-x=4x(7x) equation:


Simplifying
48 + -1x = 4x(7x)

Remove parenthesis around (7x)
48 + -1x = 4x * 7x

Reorder the terms for easier multiplication:
48 + -1x = 4 * 7x * x

Multiply 4 * 7
48 + -1x = 28x * x

Multiply x * x
48 + -1x = 28x2

Solving
48 + -1x = 28x2

Solving for variable 'x'.

Combine like terms: 28x2 + -28x2 = 0
48 + -1x + -28x2 = 0

Begin completing the square.  Divide all terms by
-28 the coefficient of the squared term: 

Divide each side by '-28'.
-1.714285714 + 0.03571428571x + x2 = 0

Move the constant term to the right:

Add '1.714285714' to each side of the equation.
-1.714285714 + 0.03571428571x + 1.714285714 + x2 = 0 + 1.714285714

Reorder the terms:
-1.714285714 + 1.714285714 + 0.03571428571x + x2 = 0 + 1.714285714

Combine like terms: -1.714285714 + 1.714285714 = 0.000000000
0.000000000 + 0.03571428571x + x2 = 0 + 1.714285714
0.03571428571x + x2 = 0 + 1.714285714

Combine like terms: 0 + 1.714285714 = 1.714285714
0.03571428571x + x2 = 1.714285714

The x term is 0.03571428571x.  Take half its coefficient (0.01785714286).
Square it (0.0003188775511) and add it to both sides.

Add '0.0003188775511' to each side of the equation.
0.03571428571x + 0.0003188775511 + x2 = 1.714285714 + 0.0003188775511

Reorder the terms:
0.0003188775511 + 0.03571428571x + x2 = 1.714285714 + 0.0003188775511

Combine like terms: 1.714285714 + 0.0003188775511 = 1.7146045915511
0.0003188775511 + 0.03571428571x + x2 = 1.7146045915511

Factor a perfect square on the left side:
(x + 0.01785714286)(x + 0.01785714286) = 1.7146045915511

Calculate the square root of the right side: 1.309429109

Break this problem into two subproblems by setting 
(x + 0.01785714286) equal to 1.309429109 and -1.309429109.

Subproblem 1

x + 0.01785714286 = 1.309429109 Simplifying x + 0.01785714286 = 1.309429109 Reorder the terms: 0.01785714286 + x = 1.309429109 Solving 0.01785714286 + x = 1.309429109 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.01785714286' to each side of the equation. 0.01785714286 + -0.01785714286 + x = 1.309429109 + -0.01785714286 Combine like terms: 0.01785714286 + -0.01785714286 = 0.00000000000 0.00000000000 + x = 1.309429109 + -0.01785714286 x = 1.309429109 + -0.01785714286 Combine like terms: 1.309429109 + -0.01785714286 = 1.29157196614 x = 1.29157196614 Simplifying x = 1.29157196614

Subproblem 2

x + 0.01785714286 = -1.309429109 Simplifying x + 0.01785714286 = -1.309429109 Reorder the terms: 0.01785714286 + x = -1.309429109 Solving 0.01785714286 + x = -1.309429109 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.01785714286' to each side of the equation. 0.01785714286 + -0.01785714286 + x = -1.309429109 + -0.01785714286 Combine like terms: 0.01785714286 + -0.01785714286 = 0.00000000000 0.00000000000 + x = -1.309429109 + -0.01785714286 x = -1.309429109 + -0.01785714286 Combine like terms: -1.309429109 + -0.01785714286 = -1.32728625186 x = -1.32728625186 Simplifying x = -1.32728625186

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.29157196614, -1.32728625186}

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