Answer:
The general solution is

+ 
Step-by-step explanation:
Step :1:-
Given differential equation y(4) − 2y''' + y'' = e^x + 1
The differential operator form of the given differential equation
comparing f(D)y = e^ x+1
The auxiliary equation (A.E) f(m) = 0




The roots are m=0,0 and m =1,1
complementary function is 
<u>Step 2</u>:-
The particular equation is 
P.I = 
P.I = 
P.I = 



applying in integration u v formula

= 





again integration 
The general solution is 

+ 
Answer:
the equation would be y=1/2x-9/2
Step-by-step explanation:
next time try to put the answers like the question did because that's always helpful
3. 45/3= 15, so she runs 1 mile in 15 minutes.
4. 45/9= 5, so each square foot can contain 5 plants.
Hope this helped!!
Answer:
im pretty sure its ACD
Step-by-step explanation:
Answer:
9n-3
Step-by-step explanation:
since 9n has a variable, u can't add or subtract 9n with 3
but if you were multiplying: 9n(3) then it would be 27n
:)