0=(4.8y^2)+y-6

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Solution for 0=(4.8y^2)+y-6 equation:


Simplifying
0 = (4.8y2) + y + -6

Reorder the terms:
0 = -6 + y + (4.8y2)

Solving
0 = -6 + y + (4.8y2)

Solving for variable 'y'.

Combine like terms: 0 + 6 = 6
6 + -1y + (-4.8y2) = -6 + y + (4.8y2) + 6 + -1y + (-4.8y2)

Reorder the terms:
6 + -1y + (-4.8y2) = -6 + 6 + y + -1y + (4.8y2) + (-4.8y2)

Combine like terms: -6 + 6 = 0
6 + -1y + (-4.8y2) = 0 + y + -1y + (4.8y2) + (-4.8y2)
6 + -1y + (-4.8y2) = y + -1y + (4.8y2) + (-4.8y2)

Combine like terms: y + -1y = 0
6 + -1y + (-4.8y2) = 0 + (4.8y2) + (-4.8y2)
6 + -1y + (-4.8y2) = (4.8y2) + (-4.8y2)

Combine like terms: (4.8y2) + (-4.8y2) = 0.0
6 + -1y + (-4.8y2) = 0.0

Begin completing the square.  Divide all terms by
-4.8 the coefficient of the squared term: 

Divide each side by '-4.8'.
-1.25 + 0.2083333333y + y2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + 0.2083333333y + 1.25 + y2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + 0.2083333333y + y2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + 0.2083333333y + y2 = 0 + 1.25
0.2083333333y + y2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
0.2083333333y + y2 = 1.25

The y term is 0.2083333333y.  Take half its coefficient (0.1041666667).
Square it (0.01085069445) and add it to both sides.

Add '0.01085069445' to each side of the equation.
0.2083333333y + 0.01085069445 + y2 = 1.25 + 0.01085069445

Reorder the terms:
0.01085069445 + 0.2083333333y + y2 = 1.25 + 0.01085069445

Combine like terms: 1.25 + 0.01085069445 = 1.26085069445
0.01085069445 + 0.2083333333y + y2 = 1.26085069445

Factor a perfect square on the left side:
((y) + 0.1041666667)((y) + 0.1041666667) = 1.26085069445

Calculate the square root of the right side: 1.122876082

Break this problem into two subproblems by setting 
((y) + 0.1041666667) equal to 1.122876082 and -1.122876082.

Subproblem 1

(y) + 0.1041666667 = 1.122876082 Simplifying (y) + 0.1041666667 = 1.122876082 y + 0.1041666667 = 1.122876082 Reorder the terms: 0.1041666667 + y = 1.122876082 Solving 0.1041666667 + y = 1.122876082 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.1041666667' to each side of the equation. 0.1041666667 + -0.1041666667 + y = 1.122876082 + -0.1041666667 Combine like terms: 0.1041666667 + -0.1041666667 = 0.0000000000 0.0000000000 + y = 1.122876082 + -0.1041666667 y = 1.122876082 + -0.1041666667 Combine like terms: 1.122876082 + -0.1041666667 = 1.0187094153 y = 1.0187094153 Simplifying y = 1.0187094153

Subproblem 2

(y) + 0.1041666667 = -1.122876082 Simplifying (y) + 0.1041666667 = -1.122876082 y + 0.1041666667 = -1.122876082 Reorder the terms: 0.1041666667 + y = -1.122876082 Solving 0.1041666667 + y = -1.122876082 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.1041666667' to each side of the equation. 0.1041666667 + -0.1041666667 + y = -1.122876082 + -0.1041666667 Combine like terms: 0.1041666667 + -0.1041666667 = 0.0000000000 0.0000000000 + y = -1.122876082 + -0.1041666667 y = -1.122876082 + -0.1041666667 Combine like terms: -1.122876082 + -0.1041666667 = -1.2270427487 y = -1.2270427487 Simplifying y = -1.2270427487

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.0187094153, -1.2270427487}

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