Question

amistre64 how do u get this in simplified form y2-y-12/y2-9......explanation would be great in a way i can understand

Answer 1

is it y² - y - 12 divided by y² - 9 ?????

Answer 2

yes it is

Answer 3

well, we need to factor the top and bottom to see what cancels out as like terms ...

Answer 4

just consider these things as glorified fractions ..

Answer 5

what would:

y^2 -y -12 ; factor as?

Answer 6

ok......

y² - y - 12 y² - 4y + 3y - 12 y(y - 4) +3(y - 4) (y + 3)(y - 4) y - 4
--------- = ---------------- = ---------------- = ------------ = -----
y² - 9 (y)² - (3)² (y - 3)(y + 3) (y + 3)(y - 3) y - 3

Answer 7

Y+4/Y+3, with the restriction y ≠ –3

Answer 8

?

Answer 9

lets see...

y^2 -y -12 ; factors to

(y-4)(y+3) ; so im thinking your (y+4) is either a typo or ....

Answer 10

ohh it was!

Answer 11

oh wait no it wasnt a typo

Answer 12

:( fml

Answer 13

y^2 - 9 is called a difference of squres, and you just gotta memorize how to do those :)

(y-3)(y+3) ; to give us

(y-4)(y+3)
--------- ; cancels like terms to get
(y-3)(y+3)

(y-4)
---- ; x not= 3 is what i see it as
(y-3)

Answer 14

does that make sense for you?

Answer 15

yes i see now
:)

Answer 16

good :)

Answer 17

thnks:)