5y^2=17y+2

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


Simplifying
5y2 = 17y + 2

Reorder the terms:
5y2 = 2 + 17y

Solving
5y2 = 2 + 17y

Solving for variable 'y'.

Reorder the terms:
-2 + -17y + 5y2 = 2 + 17y + -2 + -17y

Reorder the terms:
-2 + -17y + 5y2 = 2 + -2 + 17y + -17y

Combine like terms: 2 + -2 = 0
-2 + -17y + 5y2 = 0 + 17y + -17y
-2 + -17y + 5y2 = 17y + -17y

Combine like terms: 17y + -17y = 0
-2 + -17y + 5y2 = 0

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

Divide each side by '5'.
-0.4 + -3.4y + y2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + -3.4y + 0.4 + y2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + -3.4y + y2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + -3.4y + y2 = 0 + 0.4
-3.4y + y2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
-3.4y + y2 = 0.4

The y term is -3.4y.  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.
-3.4y + 2.89 + y2 = 0.4 + 2.89

Reorder the terms:
2.89 + -3.4y + y2 = 0.4 + 2.89

Combine like terms: 0.4 + 2.89 = 3.29
2.89 + -3.4y + y2 = 3.29

Factor a perfect square on the left side:
(y + -1.7)(y + -1.7) = 3.29

Calculate the square root of the right side: 1.813835715

Break this problem into two subproblems by setting 
(y + -1.7) equal to 1.813835715 and -1.813835715.

Subproblem 1

y + -1.7 = 1.813835715 Simplifying y + -1.7 = 1.813835715 Reorder the terms: -1.7 + y = 1.813835715 Solving -1.7 + y = 1.813835715 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.7' to each side of the equation. -1.7 + 1.7 + y = 1.813835715 + 1.7 Combine like terms: -1.7 + 1.7 = 0.0 0.0 + y = 1.813835715 + 1.7 y = 1.813835715 + 1.7 Combine like terms: 1.813835715 + 1.7 = 3.513835715 y = 3.513835715 Simplifying y = 3.513835715

Subproblem 2

y + -1.7 = -1.813835715 Simplifying y + -1.7 = -1.813835715 Reorder the terms: -1.7 + y = -1.813835715 Solving -1.7 + y = -1.813835715 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.7' to each side of the equation. -1.7 + 1.7 + y = -1.813835715 + 1.7 Combine like terms: -1.7 + 1.7 = 0.0 0.0 + y = -1.813835715 + 1.7 y = -1.813835715 + 1.7 Combine like terms: -1.813835715 + 1.7 = -0.113835715 y = -0.113835715 Simplifying y = -0.113835715

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.513835715, -0.113835715}

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