4y^2+37y-15=0

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Solution for 4y^2+37y-15=0 equation:


Simplifying
4y2 + 37y + -15 = 0

Reorder the terms:
-15 + 37y + 4y2 = 0

Solving
-15 + 37y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
-3.75 + 9.25y + y2 = 0

Move the constant term to the right:

Add '3.75' to each side of the equation.
-3.75 + 9.25y + 3.75 + y2 = 0 + 3.75

Reorder the terms:
-3.75 + 3.75 + 9.25y + y2 = 0 + 3.75

Combine like terms: -3.75 + 3.75 = 0.00
0.00 + 9.25y + y2 = 0 + 3.75
9.25y + y2 = 0 + 3.75

Combine like terms: 0 + 3.75 = 3.75
9.25y + y2 = 3.75

The y term is 9.25y.  Take half its coefficient (4.625).
Square it (21.390625) and add it to both sides.

Add '21.390625' to each side of the equation.
9.25y + 21.390625 + y2 = 3.75 + 21.390625

Reorder the terms:
21.390625 + 9.25y + y2 = 3.75 + 21.390625

Combine like terms: 3.75 + 21.390625 = 25.140625
21.390625 + 9.25y + y2 = 25.140625

Factor a perfect square on the left side:
(y + 4.625)(y + 4.625) = 25.140625

Calculate the square root of the right side: 5.01404278

Break this problem into two subproblems by setting 
(y + 4.625) equal to 5.01404278 and -5.01404278.

Subproblem 1

y + 4.625 = 5.01404278 Simplifying y + 4.625 = 5.01404278 Reorder the terms: 4.625 + y = 5.01404278 Solving 4.625 + y = 5.01404278 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4.625' to each side of the equation. 4.625 + -4.625 + y = 5.01404278 + -4.625 Combine like terms: 4.625 + -4.625 = 0.000 0.000 + y = 5.01404278 + -4.625 y = 5.01404278 + -4.625 Combine like terms: 5.01404278 + -4.625 = 0.38904278 y = 0.38904278 Simplifying y = 0.38904278

Subproblem 2

y + 4.625 = -5.01404278 Simplifying y + 4.625 = -5.01404278 Reorder the terms: 4.625 + y = -5.01404278 Solving 4.625 + y = -5.01404278 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4.625' to each side of the equation. 4.625 + -4.625 + y = -5.01404278 + -4.625 Combine like terms: 4.625 + -4.625 = 0.000 0.000 + y = -5.01404278 + -4.625 y = -5.01404278 + -4.625 Combine like terms: -5.01404278 + -4.625 = -9.63904278 y = -9.63904278 Simplifying y = -9.63904278

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.38904278, -9.63904278}

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