-2y(y-1)-y=-2

Simple and best practice solution for -2y(y-1)-y=-2 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(y-1)-y=-2 equation:


Simplifying
-2y(y + -1) + -1y = -2

Reorder the terms:
-2y(-1 + y) + -1y = -2
(-1 * -2y + y * -2y) + -1y = -2
(2y + -2y2) + -1y = -2

Reorder the terms:
2y + -1y + -2y2 = -2

Combine like terms: 2y + -1y = 1y
1y + -2y2 = -2

Solving
1y + -2y2 = -2

Solving for variable 'y'.

Reorder the terms:
2 + 1y + -2y2 = -2 + 2

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

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-1 + -0.5y + y2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.5y + 1 + y2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.5y + y2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.5y + y2 = 0 + 1
-0.5y + y2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.5y + y2 = 1

The y term is -0.5y.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5y + 0.0625 + y2 = 1 + 0.0625

Reorder the terms:
0.0625 + -0.5y + y2 = 1 + 0.0625

Combine like terms: 1 + 0.0625 = 1.0625
0.0625 + -0.5y + y2 = 1.0625

Factor a perfect square on the left side:
(y + -0.25)(y + -0.25) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(y + -0.25) equal to 1.030776406 and -1.030776406.

Subproblem 1

y + -0.25 = 1.030776406 Simplifying y + -0.25 = 1.030776406 Reorder the terms: -0.25 + y = 1.030776406 Solving -0.25 + y = 1.030776406 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + y = 1.030776406 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + y = 1.030776406 + 0.25 y = 1.030776406 + 0.25 Combine like terms: 1.030776406 + 0.25 = 1.280776406 y = 1.280776406 Simplifying y = 1.280776406

Subproblem 2

y + -0.25 = -1.030776406 Simplifying y + -0.25 = -1.030776406 Reorder the terms: -0.25 + y = -1.030776406 Solving -0.25 + y = -1.030776406 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + y = -1.030776406 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + y = -1.030776406 + 0.25 y = -1.030776406 + 0.25 Combine like terms: -1.030776406 + 0.25 = -0.780776406 y = -0.780776406 Simplifying y = -0.780776406

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.280776406, -0.780776406}

See similar equations:

| -3(x-14)-2(x-1)=4x+1 | | (H)5=7 | | H^5=7 | | 3y+5=8y | | -2x^2+1= | | 8(x-7)+2=2x-3 | | 8a+6-2=42 | | -6k-5k=0 | | w(w+3)=0 | | 6x^2+23n+7=0 | | (9x-3)(2x+8)=0 | | 1214=-(p-8) | | m+4=15 | | 8x-7=4x+2 | | x^2+23x+12=0 | | -8(x-7)=26-2x | | -1.5x^3+3x^2-4.5x=0 | | -5+5(-m-8)=-40-6m | | -20=2 | | p-4=-9+-p | | 4x-3=3x+20 | | x^2z+y(2x)+x(2y)z+y^2=0 | | 5x-38=4-4(-7x-1) | | 4-(3-3k)=-4+2k | | 64x^2-75x+21=0 | | 6=-3(-3+v) | | 6=21x-16x^2 | | -6+6n+4-1=4n+5n | | 5(6+3k)=15 | | 3x-6-6=-18 | | -6-4a=-8-3a | | 5(4c-3)+11=3(2-3(2c+8c-1)+5c) |

Equations solver categories