0=4x^2-53x+74

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Solution for 0=4x^2-53x+74 equation:


Simplifying
0 = 4x2 + -53x + 74

Reorder the terms:
0 = 74 + -53x + 4x2

Solving
0 = 74 + -53x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + -74 = -74
-74 + 53x + -4x2 = 74 + -53x + 4x2 + -74 + 53x + -4x2

Reorder the terms:
-74 + 53x + -4x2 = 74 + -74 + -53x + 53x + 4x2 + -4x2

Combine like terms: 74 + -74 = 0
-74 + 53x + -4x2 = 0 + -53x + 53x + 4x2 + -4x2
-74 + 53x + -4x2 = -53x + 53x + 4x2 + -4x2

Combine like terms: -53x + 53x = 0
-74 + 53x + -4x2 = 0 + 4x2 + -4x2
-74 + 53x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-74 + 53x + -4x2 = 0

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

Divide each side by '-4'.
18.5 + -13.25x + x2 = 0

Move the constant term to the right:

Add '-18.5' to each side of the equation.
18.5 + -13.25x + -18.5 + x2 = 0 + -18.5

Reorder the terms:
18.5 + -18.5 + -13.25x + x2 = 0 + -18.5

Combine like terms: 18.5 + -18.5 = 0.0
0.0 + -13.25x + x2 = 0 + -18.5
-13.25x + x2 = 0 + -18.5

Combine like terms: 0 + -18.5 = -18.5
-13.25x + x2 = -18.5

The x term is -13.25x.  Take half its coefficient (-6.625).
Square it (43.890625) and add it to both sides.

Add '43.890625' to each side of the equation.
-13.25x + 43.890625 + x2 = -18.5 + 43.890625

Reorder the terms:
43.890625 + -13.25x + x2 = -18.5 + 43.890625

Combine like terms: -18.5 + 43.890625 = 25.390625
43.890625 + -13.25x + x2 = 25.390625

Factor a perfect square on the left side:
(x + -6.625)(x + -6.625) = 25.390625

Calculate the square root of the right side: 5.038911093

Break this problem into two subproblems by setting 
(x + -6.625) equal to 5.038911093 and -5.038911093.

Subproblem 1

x + -6.625 = 5.038911093 Simplifying x + -6.625 = 5.038911093 Reorder the terms: -6.625 + x = 5.038911093 Solving -6.625 + x = 5.038911093 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.625' to each side of the equation. -6.625 + 6.625 + x = 5.038911093 + 6.625 Combine like terms: -6.625 + 6.625 = 0.000 0.000 + x = 5.038911093 + 6.625 x = 5.038911093 + 6.625 Combine like terms: 5.038911093 + 6.625 = 11.663911093 x = 11.663911093 Simplifying x = 11.663911093

Subproblem 2

x + -6.625 = -5.038911093 Simplifying x + -6.625 = -5.038911093 Reorder the terms: -6.625 + x = -5.038911093 Solving -6.625 + x = -5.038911093 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.625' to each side of the equation. -6.625 + 6.625 + x = -5.038911093 + 6.625 Combine like terms: -6.625 + 6.625 = 0.000 0.000 + x = -5.038911093 + 6.625 x = -5.038911093 + 6.625 Combine like terms: -5.038911093 + 6.625 = 1.586088907 x = 1.586088907 Simplifying x = 1.586088907

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.663911093, 1.586088907}

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