4y^2+y^2-3y-6+14y^2-2+4y-7y=

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Solution for 4y^2+y^2-3y-6+14y^2-2+4y-7y= equation:


Simplifying
4y2 + y2 + -3y + -6 + 14y2 + -2 + 4y + -7y = 0

Reorder the terms:
-6 + -2 + -3y + 4y + -7y + 4y2 + y2 + 14y2 = 0

Combine like terms: -6 + -2 = -8
-8 + -3y + 4y + -7y + 4y2 + y2 + 14y2 = 0

Combine like terms: -3y + 4y = 1y
-8 + 1y + -7y + 4y2 + y2 + 14y2 = 0

Combine like terms: 1y + -7y = -6y
-8 + -6y + 4y2 + y2 + 14y2 = 0

Combine like terms: 4y2 + y2 = 5y2
-8 + -6y + 5y2 + 14y2 = 0

Combine like terms: 5y2 + 14y2 = 19y2
-8 + -6y + 19y2 = 0

Solving
-8 + -6y + 19y2 = 0

Solving for variable 'y'.

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

Divide each side by '19'.
-0.4210526316 + -0.3157894737y + y2 = 0

Move the constant term to the right:

Add '0.4210526316' to each side of the equation.
-0.4210526316 + -0.3157894737y + 0.4210526316 + y2 = 0 + 0.4210526316

Reorder the terms:
-0.4210526316 + 0.4210526316 + -0.3157894737y + y2 = 0 + 0.4210526316

Combine like terms: -0.4210526316 + 0.4210526316 = 0.0000000000
0.0000000000 + -0.3157894737y + y2 = 0 + 0.4210526316
-0.3157894737y + y2 = 0 + 0.4210526316

Combine like terms: 0 + 0.4210526316 = 0.4210526316
-0.3157894737y + y2 = 0.4210526316

The y term is -0.3157894737y.  Take half its coefficient (-0.1578947369).
Square it (0.02493074794) and add it to both sides.

Add '0.02493074794' to each side of the equation.
-0.3157894737y + 0.02493074794 + y2 = 0.4210526316 + 0.02493074794

Reorder the terms:
0.02493074794 + -0.3157894737y + y2 = 0.4210526316 + 0.02493074794

Combine like terms: 0.4210526316 + 0.02493074794 = 0.44598337954
0.02493074794 + -0.3157894737y + y2 = 0.44598337954

Factor a perfect square on the left side:
(y + -0.1578947369)(y + -0.1578947369) = 0.44598337954

Calculate the square root of the right side: 0.667819871

Break this problem into two subproblems by setting 
(y + -0.1578947369) equal to 0.667819871 and -0.667819871.

Subproblem 1

y + -0.1578947369 = 0.667819871 Simplifying y + -0.1578947369 = 0.667819871 Reorder the terms: -0.1578947369 + y = 0.667819871 Solving -0.1578947369 + y = 0.667819871 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.1578947369' to each side of the equation. -0.1578947369 + 0.1578947369 + y = 0.667819871 + 0.1578947369 Combine like terms: -0.1578947369 + 0.1578947369 = 0.0000000000 0.0000000000 + y = 0.667819871 + 0.1578947369 y = 0.667819871 + 0.1578947369 Combine like terms: 0.667819871 + 0.1578947369 = 0.8257146079 y = 0.8257146079 Simplifying y = 0.8257146079

Subproblem 2

y + -0.1578947369 = -0.667819871 Simplifying y + -0.1578947369 = -0.667819871 Reorder the terms: -0.1578947369 + y = -0.667819871 Solving -0.1578947369 + y = -0.667819871 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.1578947369' to each side of the equation. -0.1578947369 + 0.1578947369 + y = -0.667819871 + 0.1578947369 Combine like terms: -0.1578947369 + 0.1578947369 = 0.0000000000 0.0000000000 + y = -0.667819871 + 0.1578947369 y = -0.667819871 + 0.1578947369 Combine like terms: -0.667819871 + 0.1578947369 = -0.5099251341 y = -0.5099251341 Simplifying y = -0.5099251341

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.8257146079, -0.5099251341}

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