5x^2=13x+17

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Solution for 5x^2=13x+17 equation:


Simplifying
5x2 = 13x + 17

Reorder the terms:
5x2 = 17 + 13x

Solving
5x2 = 17 + 13x

Solving for variable 'x'.

Reorder the terms:
-17 + -13x + 5x2 = 17 + 13x + -17 + -13x

Reorder the terms:
-17 + -13x + 5x2 = 17 + -17 + 13x + -13x

Combine like terms: 17 + -17 = 0
-17 + -13x + 5x2 = 0 + 13x + -13x
-17 + -13x + 5x2 = 13x + -13x

Combine like terms: 13x + -13x = 0
-17 + -13x + 5x2 = 0

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

Divide each side by '5'.
-3.4 + -2.6x + x2 = 0

Move the constant term to the right:

Add '3.4' to each side of the equation.
-3.4 + -2.6x + 3.4 + x2 = 0 + 3.4

Reorder the terms:
-3.4 + 3.4 + -2.6x + x2 = 0 + 3.4

Combine like terms: -3.4 + 3.4 = 0.0
0.0 + -2.6x + x2 = 0 + 3.4
-2.6x + x2 = 0 + 3.4

Combine like terms: 0 + 3.4 = 3.4
-2.6x + x2 = 3.4

The x term is -2.6x.  Take half its coefficient (-1.3).
Square it (1.69) and add it to both sides.

Add '1.69' to each side of the equation.
-2.6x + 1.69 + x2 = 3.4 + 1.69

Reorder the terms:
1.69 + -2.6x + x2 = 3.4 + 1.69

Combine like terms: 3.4 + 1.69 = 5.09
1.69 + -2.6x + x2 = 5.09

Factor a perfect square on the left side:
(x + -1.3)(x + -1.3) = 5.09

Calculate the square root of the right side: 2.256102835

Break this problem into two subproblems by setting 
(x + -1.3) equal to 2.256102835 and -2.256102835.

Subproblem 1

x + -1.3 = 2.256102835 Simplifying x + -1.3 = 2.256102835 Reorder the terms: -1.3 + x = 2.256102835 Solving -1.3 + x = 2.256102835 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.3' to each side of the equation. -1.3 + 1.3 + x = 2.256102835 + 1.3 Combine like terms: -1.3 + 1.3 = 0.0 0.0 + x = 2.256102835 + 1.3 x = 2.256102835 + 1.3 Combine like terms: 2.256102835 + 1.3 = 3.556102835 x = 3.556102835 Simplifying x = 3.556102835

Subproblem 2

x + -1.3 = -2.256102835 Simplifying x + -1.3 = -2.256102835 Reorder the terms: -1.3 + x = -2.256102835 Solving -1.3 + x = -2.256102835 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.3' to each side of the equation. -1.3 + 1.3 + x = -2.256102835 + 1.3 Combine like terms: -1.3 + 1.3 = 0.0 0.0 + x = -2.256102835 + 1.3 x = -2.256102835 + 1.3 Combine like terms: -2.256102835 + 1.3 = -0.956102835 x = -0.956102835 Simplifying x = -0.956102835

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.556102835, -0.956102835}

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