5x^2=17x+17

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


Simplifying
5x2 = 17x + 17

Reorder the terms:
5x2 = 17 + 17x

Solving
5x2 = 17 + 17x

Solving for variable 'x'.

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

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

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

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

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

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

Move the constant term to the right:

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

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

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

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

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 = 3.4 + 2.89

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

Combine like terms: 3.4 + 2.89 = 6.29
2.89 + -3.4x + x2 = 6.29

Factor a perfect square on the left side:
(x + -1.7)(x + -1.7) = 6.29

Calculate the square root of the right side: 2.507987241

Break this problem into two subproblems by setting 
(x + -1.7) equal to 2.507987241 and -2.507987241.

Subproblem 1

x + -1.7 = 2.507987241 Simplifying x + -1.7 = 2.507987241 Reorder the terms: -1.7 + x = 2.507987241 Solving -1.7 + x = 2.507987241 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 = 2.507987241 + 1.7 Combine like terms: -1.7 + 1.7 = 0.0 0.0 + x = 2.507987241 + 1.7 x = 2.507987241 + 1.7 Combine like terms: 2.507987241 + 1.7 = 4.207987241 x = 4.207987241 Simplifying x = 4.207987241

Subproblem 2

x + -1.7 = -2.507987241 Simplifying x + -1.7 = -2.507987241 Reorder the terms: -1.7 + x = -2.507987241 Solving -1.7 + x = -2.507987241 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 = -2.507987241 + 1.7 Combine like terms: -1.7 + 1.7 = 0.0 0.0 + x = -2.507987241 + 1.7 x = -2.507987241 + 1.7 Combine like terms: -2.507987241 + 1.7 = -0.807987241 x = -0.807987241 Simplifying x = -0.807987241

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.207987241, -0.807987241}

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