Answer:
simplify the expressions
Step-by-step explanation:
you just have to simplify all the different expression and then you can see the ones that are the same
Answer:
B
Step-by-step explanation:
Note that if

, then

, and so we can collapse the system of ODEs into a linear ODE:


which is a pretty standard linear ODE with constant coefficients. We have characteristic equation

so that the characteristic solution is

Now let's suppose the particular solution is

. Then

and so

Thus the general solution for

is

and you can find the solution

by simply differentiating

.
I think its A : 25 B : 81 C: 49
The answer would be -345 because you multiply first, then add, and last subtract.