4x^2-23x+27=0

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Solution for 4x^2-23x+27=0 equation:


Simplifying
4x2 + -23x + 27 = 0

Reorder the terms:
27 + -23x + 4x2 = 0

Solving
27 + -23x + 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'.
6.75 + -5.75x + x2 = 0

Move the constant term to the right:

Add '-6.75' to each side of the equation.
6.75 + -5.75x + -6.75 + x2 = 0 + -6.75

Reorder the terms:
6.75 + -6.75 + -5.75x + x2 = 0 + -6.75

Combine like terms: 6.75 + -6.75 = 0.00
0.00 + -5.75x + x2 = 0 + -6.75
-5.75x + x2 = 0 + -6.75

Combine like terms: 0 + -6.75 = -6.75
-5.75x + x2 = -6.75

The x term is -5.75x.  Take half its coefficient (-2.875).
Square it (8.265625) and add it to both sides.

Add '8.265625' to each side of the equation.
-5.75x + 8.265625 + x2 = -6.75 + 8.265625

Reorder the terms:
8.265625 + -5.75x + x2 = -6.75 + 8.265625

Combine like terms: -6.75 + 8.265625 = 1.515625
8.265625 + -5.75x + x2 = 1.515625

Factor a perfect square on the left side:
(x + -2.875)(x + -2.875) = 1.515625

Calculate the square root of the right side: 1.231107225

Break this problem into two subproblems by setting 
(x + -2.875) equal to 1.231107225 and -1.231107225.

Subproblem 1

x + -2.875 = 1.231107225 Simplifying x + -2.875 = 1.231107225 Reorder the terms: -2.875 + x = 1.231107225 Solving -2.875 + x = 1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.875' to each side of the equation. -2.875 + 2.875 + x = 1.231107225 + 2.875 Combine like terms: -2.875 + 2.875 = 0.000 0.000 + x = 1.231107225 + 2.875 x = 1.231107225 + 2.875 Combine like terms: 1.231107225 + 2.875 = 4.106107225 x = 4.106107225 Simplifying x = 4.106107225

Subproblem 2

x + -2.875 = -1.231107225 Simplifying x + -2.875 = -1.231107225 Reorder the terms: -2.875 + x = -1.231107225 Solving -2.875 + x = -1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.875' to each side of the equation. -2.875 + 2.875 + x = -1.231107225 + 2.875 Combine like terms: -2.875 + 2.875 = 0.000 0.000 + x = -1.231107225 + 2.875 x = -1.231107225 + 2.875 Combine like terms: -1.231107225 + 2.875 = 1.643892775 x = 1.643892775 Simplifying x = 1.643892775

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.106107225, 1.643892775}

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