4x^2-56x+105=0

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Solution for 4x^2-56x+105=0 equation:


Simplifying
4x2 + -56x + 105 = 0

Reorder the terms:
105 + -56x + 4x2 = 0

Solving
105 + -56x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
26.25 + -14x + x2 = 0

Move the constant term to the right:

Add '-26.25' to each side of the equation.
26.25 + -14x + -26.25 + x2 = 0 + -26.25

Reorder the terms:
26.25 + -26.25 + -14x + x2 = 0 + -26.25

Combine like terms: 26.25 + -26.25 = 0.00
0.00 + -14x + x2 = 0 + -26.25
-14x + x2 = 0 + -26.25

Combine like terms: 0 + -26.25 = -26.25
-14x + x2 = -26.25

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = -26.25 + 49

Reorder the terms:
49 + -14x + x2 = -26.25 + 49

Combine like terms: -26.25 + 49 = 22.75
49 + -14x + x2 = 22.75

Factor a perfect square on the left side:
(x + -7)(x + -7) = 22.75

Calculate the square root of the right side: 4.769696007

Break this problem into two subproblems by setting 
(x + -7) equal to 4.769696007 and -4.769696007.

Subproblem 1

x + -7 = 4.769696007 Simplifying x + -7 = 4.769696007 Reorder the terms: -7 + x = 4.769696007 Solving -7 + x = 4.769696007 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 4.769696007 + 7 Combine like terms: -7 + 7 = 0 0 + x = 4.769696007 + 7 x = 4.769696007 + 7 Combine like terms: 4.769696007 + 7 = 11.769696007 x = 11.769696007 Simplifying x = 11.769696007

Subproblem 2

x + -7 = -4.769696007 Simplifying x + -7 = -4.769696007 Reorder the terms: -7 + x = -4.769696007 Solving -7 + x = -4.769696007 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -4.769696007 + 7 Combine like terms: -7 + 7 = 0 0 + x = -4.769696007 + 7 x = -4.769696007 + 7 Combine like terms: -4.769696007 + 7 = 2.230303993 x = 2.230303993 Simplifying x = 2.230303993

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.769696007, 2.230303993}

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