4y^2-y-48=0

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Solution for 4y^2-y-48=0 equation:


Simplifying
4y2 + -1y + -48 = 0

Reorder the terms:
-48 + -1y + 4y2 = 0

Solving
-48 + -1y + 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'.
-12 + -0.25y + y2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -0.25y + 12 + y2 = 0 + 12

Reorder the terms:
-12 + 12 + -0.25y + y2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -0.25y + y2 = 0 + 12
-0.25y + y2 = 0 + 12

Combine like terms: 0 + 12 = 12
-0.25y + y2 = 12

The y term is -0.25y.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25y + 0.015625 + y2 = 12 + 0.015625

Reorder the terms:
0.015625 + -0.25y + y2 = 12 + 0.015625

Combine like terms: 12 + 0.015625 = 12.015625
0.015625 + -0.25y + y2 = 12.015625

Factor a perfect square on the left side:
(y + -0.125)(y + -0.125) = 12.015625

Calculate the square root of the right side: 3.466356156

Break this problem into two subproblems by setting 
(y + -0.125) equal to 3.466356156 and -3.466356156.

Subproblem 1

y + -0.125 = 3.466356156 Simplifying y + -0.125 = 3.466356156 Reorder the terms: -0.125 + y = 3.466356156 Solving -0.125 + y = 3.466356156 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + y = 3.466356156 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + y = 3.466356156 + 0.125 y = 3.466356156 + 0.125 Combine like terms: 3.466356156 + 0.125 = 3.591356156 y = 3.591356156 Simplifying y = 3.591356156

Subproblem 2

y + -0.125 = -3.466356156 Simplifying y + -0.125 = -3.466356156 Reorder the terms: -0.125 + y = -3.466356156 Solving -0.125 + y = -3.466356156 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + y = -3.466356156 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + y = -3.466356156 + 0.125 y = -3.466356156 + 0.125 Combine like terms: -3.466356156 + 0.125 = -3.341356156 y = -3.341356156 Simplifying y = -3.341356156

Solution

The solution to the problem is based on the solutions from the subproblems. y = {3.591356156, -3.341356156}

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