We will use the distributive property. -4 times 9z=-36z -4 times -2=8 so we have -36z+8 as our answer
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
No singular point due to the exponent in the solution
The interval is 
b
NONE
Step-by-step explanation:
From the question we are told that

The generally solution is mathematically represented as

=> 
integrating both sides

=> 
=> 
=> 
Here 
=> 
From the above equation we see that the domain for x has no singular point the interval is

Also there is no transient term in the general solution obtained because as
there no case where 
Answer:
- 12
Step-by-step explanation:
Substitute both the values of x and y in the equation given
x=2, y=4
4(2)-5(4)= 8-20
= - 12
If you mean (1/9)^2, you square top and bottom as 1/9(1/9) = 1/81