5y^2+3y+10y-2=

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Solution for 5y^2+3y+10y-2= equation:


Simplifying
5y2 + 3y + 10y + -2 = 0

Reorder the terms:
-2 + 3y + 10y + 5y2 = 0

Combine like terms: 3y + 10y = 13y
-2 + 13y + 5y2 = 0

Solving
-2 + 13y + 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'.
-0.4 + 2.6y + y2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + 2.6y + 0.4 + y2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + 2.6y + y2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + 2.6y + y2 = 0 + 0.4
2.6y + y2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
2.6y + y2 = 0.4

The y term is 2.6y.  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.
2.6y + 1.69 + y2 = 0.4 + 1.69

Reorder the terms:
1.69 + 2.6y + y2 = 0.4 + 1.69

Combine like terms: 0.4 + 1.69 = 2.09
1.69 + 2.6y + y2 = 2.09

Factor a perfect square on the left side:
(y + 1.3)(y + 1.3) = 2.09

Calculate the square root of the right side: 1.445683229

Break this problem into two subproblems by setting 
(y + 1.3) equal to 1.445683229 and -1.445683229.

Subproblem 1

y + 1.3 = 1.445683229 Simplifying y + 1.3 = 1.445683229 Reorder the terms: 1.3 + y = 1.445683229 Solving 1.3 + y = 1.445683229 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.3' to each side of the equation. 1.3 + -1.3 + y = 1.445683229 + -1.3 Combine like terms: 1.3 + -1.3 = 0.0 0.0 + y = 1.445683229 + -1.3 y = 1.445683229 + -1.3 Combine like terms: 1.445683229 + -1.3 = 0.145683229 y = 0.145683229 Simplifying y = 0.145683229

Subproblem 2

y + 1.3 = -1.445683229 Simplifying y + 1.3 = -1.445683229 Reorder the terms: 1.3 + y = -1.445683229 Solving 1.3 + y = -1.445683229 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1.3' to each side of the equation. 1.3 + -1.3 + y = -1.445683229 + -1.3 Combine like terms: 1.3 + -1.3 = 0.0 0.0 + y = -1.445683229 + -1.3 y = -1.445683229 + -1.3 Combine like terms: -1.445683229 + -1.3 = -2.745683229 y = -2.745683229 Simplifying y = -2.745683229

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.145683229, -2.745683229}

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