5y^2+29y+8=0

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Solution for 5y^2+29y+8=0 equation:


Simplifying
5y2 + 29y + 8 = 0

Reorder the terms:
8 + 29y + 5y2 = 0

Solving
8 + 29y + 5y2 = 0

Solving for variable 'y'.

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

Divide each side by '5'.
1.6 + 5.8y + y2 = 0

Move the constant term to the right:

Add '-1.6' to each side of the equation.
1.6 + 5.8y + -1.6 + y2 = 0 + -1.6

Reorder the terms:
1.6 + -1.6 + 5.8y + y2 = 0 + -1.6

Combine like terms: 1.6 + -1.6 = 0.0
0.0 + 5.8y + y2 = 0 + -1.6
5.8y + y2 = 0 + -1.6

Combine like terms: 0 + -1.6 = -1.6
5.8y + y2 = -1.6

The y term is 5.8y.  Take half its coefficient (2.9).
Square it (8.41) and add it to both sides.

Add '8.41' to each side of the equation.
5.8y + 8.41 + y2 = -1.6 + 8.41

Reorder the terms:
8.41 + 5.8y + y2 = -1.6 + 8.41

Combine like terms: -1.6 + 8.41 = 6.81
8.41 + 5.8y + y2 = 6.81

Factor a perfect square on the left side:
(y + 2.9)(y + 2.9) = 6.81

Calculate the square root of the right side: 2.60959767

Break this problem into two subproblems by setting 
(y + 2.9) equal to 2.60959767 and -2.60959767.

Subproblem 1

y + 2.9 = 2.60959767 Simplifying y + 2.9 = 2.60959767 Reorder the terms: 2.9 + y = 2.60959767 Solving 2.9 + y = 2.60959767 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2.9' to each side of the equation. 2.9 + -2.9 + y = 2.60959767 + -2.9 Combine like terms: 2.9 + -2.9 = 0.0 0.0 + y = 2.60959767 + -2.9 y = 2.60959767 + -2.9 Combine like terms: 2.60959767 + -2.9 = -0.29040233 y = -0.29040233 Simplifying y = -0.29040233

Subproblem 2

y + 2.9 = -2.60959767 Simplifying y + 2.9 = -2.60959767 Reorder the terms: 2.9 + y = -2.60959767 Solving 2.9 + y = -2.60959767 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2.9' to each side of the equation. 2.9 + -2.9 + y = -2.60959767 + -2.9 Combine like terms: 2.9 + -2.9 = 0.0 0.0 + y = -2.60959767 + -2.9 y = -2.60959767 + -2.9 Combine like terms: -2.60959767 + -2.9 = -5.50959767 y = -5.50959767 Simplifying y = -5.50959767

Solution

The solution to the problem is based on the solutions from the subproblems. y = {-0.29040233, -5.50959767}

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