SOLUTION: I need to find the excluded variables for this expression= (y^2+5y-6)/(y^2-8y+7) I've already simplified it into (y+6)/(y-7) but i'm having trouble finding the excluded variables

Question 517523: I need to find the excluded variables for this expression= (y^2+5y-6)/(y^2-8y+7) I've already simplified it into (y+6)/(y-7) but i'm having trouble finding the excluded variables
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
excluded values are those which result in undefined results (usually, division by zero)

if y = 7, then your simplified denominator is zero ___ this is excluded

even though you canceled the y-1 factors, y = 1 is an excluded value because there is a "hole" in the graph there
RELATED QUESTIONS
I'm having problems simplifying this rational expression:... (answered by ReadingBoosters)

I need to find y for this equation when x=6 {{{ (((y-21.937)^2)/48.123)-((x^2)/16)=1 (answered by josgarithmetic,mananth)

I need help solving a linear system problem using linear comblinations. The problem is... (answered by nyc_function,richwmiller)

please help me to solve this problem in geometry state condition for parallelness or... (answered by Alan3354)

I really need help with this, I've been given the rules, but I don't under stand how to... (answered by Mathtut,josmiceli)

I need help with a few problems. I am stuck. 1) Write the equation (1/5)^-7 = 78125 in (answered by RAY100)

I need help with this rational expression please. I am supposed to find the LCD and... (answered by jsmallt9)

i need the steps for the following problems 6(2+y)-4=-10 7(y-2)+8=3(y-4)-2... (answered by AnlytcPhil)

I need to find the sum or difference with unlike denominators 1. (y+2)/ (y^2+5y+6) +... (answered by user_dude2008,solver91311)