Question

Medal for help please Simplify (a^2 + 2a - 15) / (a^2 - 16) / (9 - 3a) / (3a - 12)

Answer 1

Get factor for example for (3a - 12) have :
3(a-4)
and for :
(9 - 3a)
have : 3(-a+9)
K ?:)

Answer 2

we have :
(a^2 + 2a - 15) / (a^2 - 16) / (9 - 3a) / (3a - 12)
(a^2 + 2a - 15) / (a^2 - 16) / 3(3 -a) / 3(a - 4)
(a^2 + 2a - 15) / (a^2 - 16) / (3-a)/(a-4)
can say :
(a^2 + 2a - 15) / (9 - 3a) / (3a - 12) / (a^2 - 16)
have :
(9 - 3a) / (3a - 12)=9/3a-9/12-3a/3a-3a/12
and ...:)

Answer 3

Is it :
-(-a-5) ???

Answer 4

You said !
My meant was in your answer :- (a = 5) is -(-a-5) ??? or not !
It is nt my answer !:)

Answer 5

- (a-5 / a-4)