y^2-2y=8

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


Simplifying
y2 + -2y = 8

Reorder the terms:
-2y + y2 = 8

Solving
-2y + y2 = 8

Solving for variable 'y'.

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

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

Factor a trinomial.
(-2 + -1y)(4 + -1y) = 0

Subproblem 1

Set the factor '(-2 + -1y)' equal to zero and attempt to solve: Simplifying -2 + -1y = 0 Solving -2 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1y = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1y = 0 + 2 -1y = 0 + 2 Combine like terms: 0 + 2 = 2 -1y = 2 Divide each side by '-1'. y = -2 Simplifying y = -2

Subproblem 2

Set the factor '(4 + -1y)' equal to zero and attempt to solve: Simplifying 4 + -1y = 0 Solving 4 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1y = 0 + -4 -1y = 0 + -4 Combine like terms: 0 + -4 = -4 -1y = -4 Divide each side by '-1'. y = 4 Simplifying y = 4

Solution

y = {-2, 4}

See similar equations:

| -101+x=-3x+27 | | 7x+y^2=-5/56+1/8 | | 0.6(x-6)=3.0 | | x^2-2x-15=-7 | | 50*n= | | 1/4-12/8=4 | | 10+5(9n-1)= | | 7/21=6/x | | 1/8x-4+3/8x-4=5 | | 6x-6+12=180 | | -12=4(-1-2n)+4(1-n) | | 9-12x=3x | | 8+125x^3= | | w/24+17=29 | | -2(x+5)+3=8(x+3)+6 | | n+4+9+5n= | | 2x+4=23+x-3x | | 14k+12-15k=6 | | 3x-18=9+x-7+x | | -63+4x=-x+67 | | 8.71-2.44x=11.02-5.74x | | 0.5x-0.3(6-x)=3.4 | | 2n+9+10n= | | x=5+3i | | (4m^3-4m^2-5m)/(2m+3) | | X/4-10=22 | | 2x^2+2y^2+3x+5y+2=0 | | 4x*2+6x-18=0 | | -(3k-2)-3(k+4)=14 | | 4+7(1+3m)= | | 3x^2-2x^3-0.5=0 | | 4(5x+10)=12x |

Equations solver categories