3y^2+24-7y-56=

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Solution for 3y^2+24-7y-56= equation:


Simplifying
3y2 + 24 + -7y + -56 = 0

Reorder the terms:
24 + -56 + -7y + 3y2 = 0

Combine like terms: 24 + -56 = -32
-32 + -7y + 3y2 = 0

Solving
-32 + -7y + 3y2 = 0

Solving for variable 'y'.

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

Divide each side by '3'.
-10.66666667 + -2.333333333y + y2 = 0

Move the constant term to the right:

Add '10.66666667' to each side of the equation.
-10.66666667 + -2.333333333y + 10.66666667 + y2 = 0 + 10.66666667

Reorder the terms:
-10.66666667 + 10.66666667 + -2.333333333y + y2 = 0 + 10.66666667

Combine like terms: -10.66666667 + 10.66666667 = 0.00000000
0.00000000 + -2.333333333y + y2 = 0 + 10.66666667
-2.333333333y + y2 = 0 + 10.66666667

Combine like terms: 0 + 10.66666667 = 10.66666667
-2.333333333y + y2 = 10.66666667

The y term is -2.333333333y.  Take half its coefficient (-1.166666667).
Square it (1.361111112) and add it to both sides.

Add '1.361111112' to each side of the equation.
-2.333333333y + 1.361111112 + y2 = 10.66666667 + 1.361111112

Reorder the terms:
1.361111112 + -2.333333333y + y2 = 10.66666667 + 1.361111112

Combine like terms: 10.66666667 + 1.361111112 = 12.027777782
1.361111112 + -2.333333333y + y2 = 12.027777782

Factor a perfect square on the left side:
(y + -1.166666667)(y + -1.166666667) = 12.027777782

Calculate the square root of the right side: 3.468108675

Break this problem into two subproblems by setting 
(y + -1.166666667) equal to 3.468108675 and -3.468108675.

Subproblem 1

y + -1.166666667 = 3.468108675 Simplifying y + -1.166666667 = 3.468108675 Reorder the terms: -1.166666667 + y = 3.468108675 Solving -1.166666667 + y = 3.468108675 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + y = 3.468108675 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + y = 3.468108675 + 1.166666667 y = 3.468108675 + 1.166666667 Combine like terms: 3.468108675 + 1.166666667 = 4.634775342 y = 4.634775342 Simplifying y = 4.634775342

Subproblem 2

y + -1.166666667 = -3.468108675 Simplifying y + -1.166666667 = -3.468108675 Reorder the terms: -1.166666667 + y = -3.468108675 Solving -1.166666667 + y = -3.468108675 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.166666667' to each side of the equation. -1.166666667 + 1.166666667 + y = -3.468108675 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + y = -3.468108675 + 1.166666667 y = -3.468108675 + 1.166666667 Combine like terms: -3.468108675 + 1.166666667 = -2.301442008 y = -2.301442008 Simplifying y = -2.301442008

Solution

The solution to the problem is based on the solutions from the subproblems. y = {4.634775342, -2.301442008}

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