Question

Which of the following is the simplified form of the y^2 + y - 12 / y^2 - 9

Answer 1

(y+4)(y-3)
---------
(y-3)(y+3)

Answer 2

simplifie

Answer 3

and will get the result

Answer 4

You can factorise the top of the equation to
(y+4)(y-3)

and the bottom to
(y-3)(y+3)

Note that one of the brackets above is equal to one on the bottom (i.e. the (y-3)), hence these will cancel.

This leaves you with

(y+4)/(y+3)

Answer 5

ok but how do i find out the restriction thats the part i dont get

Answer 6

so the restriction can being x not can be never +/-3 so because than the denominator will be zero and than the fraction is undefined

Answer 7

ok ?

Answer 8

ok..now say that in english

Answer 9

the answer is x+4 over x+3 with a restriction of -3 ?

Answer 10

so we know that when the denominator of a fraction is zero so than this fraction is undefined -- right ?

Answer 11

can u just draw it because ur not making sence

Answer 12

check it please your exersice

Answer 13

so there is in denominator y^2 -9
yes ?

Answer 14

thats not what im asking u!!! none of that has to do with the restriction!!

Answer 15

before all the first step need to be making the restriction

Answer 16

and after you can continueing the calcules

Answer 17

so the fisrt step is to push that y not can be never values +/- 3