2y^2-4y-14-y^2=0

Simple and best practice solution for 2y^2-4y-14-y^2=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2y^2-4y-14-y^2=0 equation:


Simplifying
2y2 + -4y + -14 + -1y2 = 0

Reorder the terms:
-14 + -4y + 2y2 + -1y2 = 0

Combine like terms: 2y2 + -1y2 = 1y2
-14 + -4y + 1y2 = 0

Solving
-14 + -4y + 1y2 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -4y + 14 + y2 = 0 + 14

Reorder the terms:
-14 + 14 + -4y + y2 = 0 + 14

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

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

The y term is -4y.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4y + 4 + y2 = 14 + 4

Reorder the terms:
4 + -4y + y2 = 14 + 4

Combine like terms: 14 + 4 = 18
4 + -4y + y2 = 18

Factor a perfect square on the left side:
(y + -2)(y + -2) = 18

Calculate the square root of the right side: 4.242640687

Break this problem into two subproblems by setting 
(y + -2) equal to 4.242640687 and -4.242640687.

Subproblem 1

y + -2 = 4.242640687 Simplifying y + -2 = 4.242640687 Reorder the terms: -2 + y = 4.242640687 Solving -2 + y = 4.242640687 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + y = 4.242640687 + 2 Combine like terms: -2 + 2 = 0 0 + y = 4.242640687 + 2 y = 4.242640687 + 2 Combine like terms: 4.242640687 + 2 = 6.242640687 y = 6.242640687 Simplifying y = 6.242640687

Subproblem 2

y + -2 = -4.242640687 Simplifying y + -2 = -4.242640687 Reorder the terms: -2 + y = -4.242640687 Solving -2 + y = -4.242640687 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + y = -4.242640687 + 2 Combine like terms: -2 + 2 = 0 0 + y = -4.242640687 + 2 y = -4.242640687 + 2 Combine like terms: -4.242640687 + 2 = -2.242640687 y = -2.242640687 Simplifying y = -2.242640687

Solution

The solution to the problem is based on the solutions from the subproblems. y = {6.242640687, -2.242640687}

See similar equations:

| 6+16s-1=8s+71-3s | | 3w^2+3w-35=0 | | 4x^2-58x-54=0 | | 3x^2y-6x^2y^4= | | 4h+7=7h+1 | | x+7=19-x | | 3x^2(3x+2)=0 | | 4z+13z=136 | | 3(2+u)-u=6+2(u+1) | | 15z=15 | | 4(w-2)-3w=2(w-6) | | -13p=-169 | | v^2+8v+12=0 | | 8+a=5 | | 3-7x+10x-14=9-6x+9-20 | | -3m+8=14 | | 7a+9=2 | | 8x+60+3x+10=180 | | (3v+4)(5-v)=0 | | -8(3y-12)= | | -2w(w-5)(w+2)=0 | | (8-w)(2w+7)=0 | | 8x+34+5x-10=90 | | (z-8)(z-2)=0 | | 3v^5*3x^9v^5*5x= | | -0.42857142857w-1.66666666667=-2.5 | | 9t=-72 | | -2(4b+2)+(9b-7)=0 | | (6x-3)(3x+15)=0 | | 5t-(4-t)=8-(2+t) | | 5k-5l= | | 2.5q-5.7-3.4q=-1.9q-4.7 |

Equations solver categories