4x^2-23x+17=-3+8

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Solution for 4x^2-23x+17=-3+8 equation:


Simplifying
4x2 + -23x + 17 = -3 + 8

Reorder the terms:
17 + -23x + 4x2 = -3 + 8

Combine like terms: -3 + 8 = 5
17 + -23x + 4x2 = 5

Solving
17 + -23x + 4x2 = 5

Solving for variable 'x'.

Reorder the terms:
17 + -5 + -23x + 4x2 = 5 + -5

Combine like terms: 17 + -5 = 12
12 + -23x + 4x2 = 5 + -5

Combine like terms: 5 + -5 = 0
12 + -23x + 4x2 = 0

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

Divide each side by '4'.
3 + -5.75x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -5.75x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -5.75x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -5.75x + x2 = 0 + -3
-5.75x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-5.75x + x2 = -3

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 = -3 + 8.265625

Reorder the terms:
8.265625 + -5.75x + x2 = -3 + 8.265625

Combine like terms: -3 + 8.265625 = 5.265625
8.265625 + -5.75x + x2 = 5.265625

Factor a perfect square on the left side:
(x + -2.875)(x + -2.875) = 5.265625

Calculate the square root of the right side: 2.294694969

Break this problem into two subproblems by setting 
(x + -2.875) equal to 2.294694969 and -2.294694969.

Subproblem 1

x + -2.875 = 2.294694969 Simplifying x + -2.875 = 2.294694969 Reorder the terms: -2.875 + x = 2.294694969 Solving -2.875 + x = 2.294694969 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 = 2.294694969 + 2.875 Combine like terms: -2.875 + 2.875 = 0.000 0.000 + x = 2.294694969 + 2.875 x = 2.294694969 + 2.875 Combine like terms: 2.294694969 + 2.875 = 5.169694969 x = 5.169694969 Simplifying x = 5.169694969

Subproblem 2

x + -2.875 = -2.294694969 Simplifying x + -2.875 = -2.294694969 Reorder the terms: -2.875 + x = -2.294694969 Solving -2.875 + x = -2.294694969 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 = -2.294694969 + 2.875 Combine like terms: -2.875 + 2.875 = 0.000 0.000 + x = -2.294694969 + 2.875 x = -2.294694969 + 2.875 Combine like terms: -2.294694969 + 2.875 = 0.580305031 x = 0.580305031 Simplifying x = 0.580305031

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.169694969, 0.580305031}

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