5x^2-17x+6=9

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Solution for 5x^2-17x+6=9 equation:


Simplifying
5x2 + -17x + 6 = 9

Reorder the terms:
6 + -17x + 5x2 = 9

Solving
6 + -17x + 5x2 = 9

Solving for variable 'x'.

Reorder the terms:
6 + -9 + -17x + 5x2 = 9 + -9

Combine like terms: 6 + -9 = -3
-3 + -17x + 5x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-3 + -17x + 5x2 = 0

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

Divide each side by '5'.
-0.6 + -3.4x + x2 = 0

Move the constant term to the right:

Add '0.6' to each side of the equation.
-0.6 + -3.4x + 0.6 + x2 = 0 + 0.6

Reorder the terms:
-0.6 + 0.6 + -3.4x + x2 = 0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + -3.4x + x2 = 0 + 0.6
-3.4x + x2 = 0 + 0.6

Combine like terms: 0 + 0.6 = 0.6
-3.4x + x2 = 0.6

The x term is -3.4x.  Take half its coefficient (-1.7).
Square it (2.89) and add it to both sides.

Add '2.89' to each side of the equation.
-3.4x + 2.89 + x2 = 0.6 + 2.89

Reorder the terms:
2.89 + -3.4x + x2 = 0.6 + 2.89

Combine like terms: 0.6 + 2.89 = 3.49
2.89 + -3.4x + x2 = 3.49

Factor a perfect square on the left side:
(x + -1.7)(x + -1.7) = 3.49

Calculate the square root of the right side: 1.868154169

Break this problem into two subproblems by setting 
(x + -1.7) equal to 1.868154169 and -1.868154169.

Subproblem 1

x + -1.7 = 1.868154169 Simplifying x + -1.7 = 1.868154169 Reorder the terms: -1.7 + x = 1.868154169 Solving -1.7 + x = 1.868154169 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.7' to each side of the equation. -1.7 + 1.7 + x = 1.868154169 + 1.7 Combine like terms: -1.7 + 1.7 = 0.0 0.0 + x = 1.868154169 + 1.7 x = 1.868154169 + 1.7 Combine like terms: 1.868154169 + 1.7 = 3.568154169 x = 3.568154169 Simplifying x = 3.568154169

Subproblem 2

x + -1.7 = -1.868154169 Simplifying x + -1.7 = -1.868154169 Reorder the terms: -1.7 + x = -1.868154169 Solving -1.7 + x = -1.868154169 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.7' to each side of the equation. -1.7 + 1.7 + x = -1.868154169 + 1.7 Combine like terms: -1.7 + 1.7 = 0.0 0.0 + x = -1.868154169 + 1.7 x = -1.868154169 + 1.7 Combine like terms: -1.868154169 + 1.7 = -0.168154169 x = -0.168154169 Simplifying x = -0.168154169

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.568154169, -0.168154169}

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