y^2-y-90=0

Simple and best practice solution for y^2-y-90=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 y^2-y-90=0 equation:


Simplifying
y2 + -1y + -90 = 0

Reorder the terms:
-90 + -1y + y2 = 0

Solving
-90 + -1y + y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-9 + -1y)(10 + -1y) = 0

Subproblem 1

Set the factor '(-9 + -1y)' equal to zero and attempt to solve: Simplifying -9 + -1y = 0 Solving -9 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1y = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1y = 0 + 9 -1y = 0 + 9 Combine like terms: 0 + 9 = 9 -1y = 9 Divide each side by '-1'. y = -9 Simplifying y = -9

Subproblem 2

Set the factor '(10 + -1y)' equal to zero and attempt to solve: Simplifying 10 + -1y = 0 Solving 10 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1y = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1y = 0 + -10 -1y = 0 + -10 Combine like terms: 0 + -10 = -10 -1y = -10 Divide each side by '-1'. y = 10 Simplifying y = 10

Solution

y = {-9, 10}

See similar equations:

| y^3=y | | 3-4x-x+9= | | 14m-5=219 | | 4x+23=15 | | 12x^3-20x^2+x+3=0 | | b^3-4b=0 | | 3(2x-1)=4x+7 | | 6w-17w=22 | | 0=x^2+4x | | a^2+9=10a | | 64=3x+13 | | s^2-9s=0 | | a^2-4a+3=0 | | -81+15x=161+4x | | 25x^4-15x^2-20=0 | | 10-9x=200-44x | | 2x^2-11x+21=0 | | 2+3m=5 | | 5x+44=9+12 | | -31-6x=8x+20 | | 107-7x=29x+15 | | 0.03x+0.05(6000-x)=280 | | 13-7x=65-21x | | -49-8=8x+15 | | 0.20x+13+x=-0.10(x+40)+4 | | 124+123+4*56+7-6+(54)*7= | | -31-9x=200-44x | | 10y-11=6y-5 | | c^3+2c^2-15c=0 | | 2x+11=91-6x | | c^3+2c^2-5c=0 | | 11s-13=4s-8 |

Equations solver categories