4x^2-45x+112=0

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Solution for 4x^2-45x+112=0 equation:


Simplifying
4x2 + -45x + 112 = 0

Reorder the terms:
112 + -45x + 4x2 = 0

Solving
112 + -45x + 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'.
28 + -11.25x + x2 = 0

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + -11.25x + -28 + x2 = 0 + -28

Reorder the terms:
28 + -28 + -11.25x + x2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -11.25x + x2 = 0 + -28
-11.25x + x2 = 0 + -28

Combine like terms: 0 + -28 = -28
-11.25x + x2 = -28

The x term is -11.25x.  Take half its coefficient (-5.625).
Square it (31.640625) and add it to both sides.

Add '31.640625' to each side of the equation.
-11.25x + 31.640625 + x2 = -28 + 31.640625

Reorder the terms:
31.640625 + -11.25x + x2 = -28 + 31.640625

Combine like terms: -28 + 31.640625 = 3.640625
31.640625 + -11.25x + x2 = 3.640625

Factor a perfect square on the left side:
(x + -5.625)(x + -5.625) = 3.640625

Calculate the square root of the right side: 1.90804219

Break this problem into two subproblems by setting 
(x + -5.625) equal to 1.90804219 and -1.90804219.

Subproblem 1

x + -5.625 = 1.90804219 Simplifying x + -5.625 = 1.90804219 Reorder the terms: -5.625 + x = 1.90804219 Solving -5.625 + x = 1.90804219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.625' to each side of the equation. -5.625 + 5.625 + x = 1.90804219 + 5.625 Combine like terms: -5.625 + 5.625 = 0.000 0.000 + x = 1.90804219 + 5.625 x = 1.90804219 + 5.625 Combine like terms: 1.90804219 + 5.625 = 7.53304219 x = 7.53304219 Simplifying x = 7.53304219

Subproblem 2

x + -5.625 = -1.90804219 Simplifying x + -5.625 = -1.90804219 Reorder the terms: -5.625 + x = -1.90804219 Solving -5.625 + x = -1.90804219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.625' to each side of the equation. -5.625 + 5.625 + x = -1.90804219 + 5.625 Combine like terms: -5.625 + 5.625 = 0.000 0.000 + x = -1.90804219 + 5.625 x = -1.90804219 + 5.625 Combine like terms: -1.90804219 + 5.625 = 3.71695781 x = 3.71695781 Simplifying x = 3.71695781

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.53304219, 3.71695781}

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