(4y^2)-37y+42=0

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Solution for (4y^2)-37y+42=0 equation:


Simplifying
(4y2) + -37y + 42 = 0

Reorder the terms:
42 + -37y + (4y2) = 0

Solving
42 + -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'.
10.5 + -9.25y + y2 = 0

Move the constant term to the right:

Add '-10.5' to each side of the equation.
10.5 + -9.25y + -10.5 + y2 = 0 + -10.5

Reorder the terms:
10.5 + -10.5 + -9.25y + y2 = 0 + -10.5

Combine like terms: 10.5 + -10.5 = 0.0
0.0 + -9.25y + y2 = 0 + -10.5
-9.25y + y2 = 0 + -10.5

Combine like terms: 0 + -10.5 = -10.5
-9.25y + y2 = -10.5

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 = -10.5 + 21.390625

Reorder the terms:
21.390625 + -9.25y + y2 = -10.5 + 21.390625

Combine like terms: -10.5 + 21.390625 = 10.890625
21.390625 + -9.25y + y2 = 10.890625

Factor a perfect square on the left side:
((y) + -4.625)((y) + -4.625) = 10.890625

Calculate the square root of the right side: 3.300094696

Break this problem into two subproblems by setting 
((y) + -4.625) equal to 3.300094696 and -3.300094696.

Subproblem 1

(y) + -4.625 = 3.300094696 Simplifying (y) + -4.625 = 3.300094696 y + -4.625 = 3.300094696 Reorder the terms: -4.625 + y = 3.300094696 Solving -4.625 + y = 3.300094696 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 = 3.300094696 + 4.625 Combine like terms: -4.625 + 4.625 = 0.000 0.000 + y = 3.300094696 + 4.625 y = 3.300094696 + 4.625 Combine like terms: 3.300094696 + 4.625 = 7.925094696 y = 7.925094696 Simplifying y = 7.925094696

Subproblem 2

(y) + -4.625 = -3.300094696 Simplifying (y) + -4.625 = -3.300094696 y + -4.625 = -3.300094696 Reorder the terms: -4.625 + y = -3.300094696 Solving -4.625 + y = -3.300094696 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 = -3.300094696 + 4.625 Combine like terms: -4.625 + 4.625 = 0.000 0.000 + y = -3.300094696 + 4.625 y = -3.300094696 + 4.625 Combine like terms: -3.300094696 + 4.625 = 1.324905304 y = 1.324905304 Simplifying y = 1.324905304

Solution

The solution to the problem is based on the solutions from the subproblems. y = {7.925094696, 1.324905304}

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