4x^2-17x=43

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Solution for 4x^2-17x=43 equation:


Simplifying
4x2 + -17x = 43

Reorder the terms:
-17x + 4x2 = 43

Solving
-17x + 4x2 = 43

Solving for variable 'x'.

Reorder the terms:
-43 + -17x + 4x2 = 43 + -43

Combine like terms: 43 + -43 = 0
-43 + -17x + 4x2 = 0

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

Divide each side by '4'.
-10.75 + -4.25x + x2 = 0

Move the constant term to the right:

Add '10.75' to each side of the equation.
-10.75 + -4.25x + 10.75 + x2 = 0 + 10.75

Reorder the terms:
-10.75 + 10.75 + -4.25x + x2 = 0 + 10.75

Combine like terms: -10.75 + 10.75 = 0.00
0.00 + -4.25x + x2 = 0 + 10.75
-4.25x + x2 = 0 + 10.75

Combine like terms: 0 + 10.75 = 10.75
-4.25x + x2 = 10.75

The x term is -4.25x.  Take half its coefficient (-2.125).
Square it (4.515625) and add it to both sides.

Add '4.515625' to each side of the equation.
-4.25x + 4.515625 + x2 = 10.75 + 4.515625

Reorder the terms:
4.515625 + -4.25x + x2 = 10.75 + 4.515625

Combine like terms: 10.75 + 4.515625 = 15.265625
4.515625 + -4.25x + x2 = 15.265625

Factor a perfect square on the left side:
(x + -2.125)(x + -2.125) = 15.265625

Calculate the square root of the right side: 3.907124902

Break this problem into two subproblems by setting 
(x + -2.125) equal to 3.907124902 and -3.907124902.

Subproblem 1

x + -2.125 = 3.907124902 Simplifying x + -2.125 = 3.907124902 Reorder the terms: -2.125 + x = 3.907124902 Solving -2.125 + x = 3.907124902 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = 3.907124902 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = 3.907124902 + 2.125 x = 3.907124902 + 2.125 Combine like terms: 3.907124902 + 2.125 = 6.032124902 x = 6.032124902 Simplifying x = 6.032124902

Subproblem 2

x + -2.125 = -3.907124902 Simplifying x + -2.125 = -3.907124902 Reorder the terms: -2.125 + x = -3.907124902 Solving -2.125 + x = -3.907124902 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = -3.907124902 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = -3.907124902 + 2.125 x = -3.907124902 + 2.125 Combine like terms: -3.907124902 + 2.125 = -1.782124902 x = -1.782124902 Simplifying x = -1.782124902

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.032124902, -1.782124902}

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