Question

expand:
(¹/y + 4) (¹/y - 9)
​

Answer 1

Answer:

Let y be 1 then do

Step-by-step explanation:

You steeppp by step do

Answer 2

Answer:

Step-by-step explanation:

1/y+4=(1+4y)/y

(1/y-9)=(1-9y)/9

(1+4y)/y(1-9y)/9

((1+4y)(1-9y))/36

(1-9y+4y-36y²)/36=0

-36y²-9y+4y+1=0

36y²+9y-4y-1=0

36y²-5y-1=0