-2y^2-8y=-6

Simple and best practice solution for -2y^2-8y=-6 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^2-8y=-6 equation:


Simplifying
-2y2 + -8y = -6

Reorder the terms:
-8y + -2y2 = -6

Solving
-8y + -2y2 = -6

Solving for variable 'y'.

Reorder the terms:
6 + -8y + -2y2 = -6 + 6

Combine like terms: -6 + 6 = 0
6 + -8y + -2y2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(3 + -4y + -1y2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(3 + -4y + -1y2)' equal to zero and attempt to solve: Simplifying 3 + -4y + -1y2 = 0 Solving 3 + -4y + -1y2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -3 + 4y + y2 = 0 Move the constant term to the right: Add '3' to each side of the equation. -3 + 4y + 3 + y2 = 0 + 3 Reorder the terms: -3 + 3 + 4y + y2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 4y + y2 = 0 + 3 4y + y2 = 0 + 3 Combine like terms: 0 + 3 = 3 4y + y2 = 3 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 = 3 + 4 Reorder the terms: 4 + 4y + y2 = 3 + 4 Combine like terms: 3 + 4 = 7 4 + 4y + y2 = 7 Factor a perfect square on the left side: (y + 2)(y + 2) = 7 Calculate the square root of the right side: 2.645751311 Break this problem into two subproblems by setting (y + 2) equal to 2.645751311 and -2.645751311.

Subproblem 1

y + 2 = 2.645751311 Simplifying y + 2 = 2.645751311 Reorder the terms: 2 + y = 2.645751311 Solving 2 + y = 2.645751311 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 = 2.645751311 + -2 Combine like terms: 2 + -2 = 0 0 + y = 2.645751311 + -2 y = 2.645751311 + -2 Combine like terms: 2.645751311 + -2 = 0.645751311 y = 0.645751311 Simplifying y = 0.645751311

Subproblem 2

y + 2 = -2.645751311 Simplifying y + 2 = -2.645751311 Reorder the terms: 2 + y = -2.645751311 Solving 2 + y = -2.645751311 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 = -2.645751311 + -2 Combine like terms: 2 + -2 = 0 0 + y = -2.645751311 + -2 y = -2.645751311 + -2 Combine like terms: -2.645751311 + -2 = -4.645751311 y = -4.645751311 Simplifying y = -4.645751311

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.645751311, -4.645751311}

Solution

y = {0.645751311, -4.645751311}

See similar equations:

| 2w/6=12/9 | | 9(7k+2)=207 | | 27x^2-27= | | 50=(2+X)/(1.15) | | 18a/12=15/3 | | 3y/4=-y/8 | | 12/k=24/k | | 1.5/x=12/x | | 4/2b=4/12 | | 5/8=p/24 | | (5x+20)%(x+4)= | | 3(m+1.5)=5(2m+3) | | 75-10/-1=-1 | | 4/6=8/x | | x^2-40x+4500=6600 | | -5n-4(-7--4n)=36-7n | | 488=-8(8x+10)-8 | | x^2-40x+4500=0 | | 3y+6x=-12 | | ((x+6)/3)=((x+8)/6) | | (120+X)(80+X)=16500 | | -16t^2+135+76=0 | | -5(x+2)=-30 | | 6h^2+8h+2= | | 5(8n-7)=-155 | | -15=-3(x-9) | | 24=8(x-1) | | -17-3n+6n=7-9n+8n | | 3x+(-10)=13x | | -6=-3/u | | 2x+x+40=180 | | 3x+10x=13 |

Equations solver categories