Question

If P (x+1)= 3x^2-2x-5 Find P(4).

Answer 1

my answer is 35, i'm not sure

Answer 2

Not quite. How did you get that?

Answer 3

P(4)=3(4)^2-2(4)-5
3(16)-8-5
48-8-5
=35

Answer 4

I dont know if I am right trying to ask for help here.

Answer 5

There are actually several ways to do this...
Easiest Way:
Set x + 1 equal to 4 and solve for x. Then plug that in for x.
x + 1 = 4
x = 3
Plug in 3 now.

Answer 6

thanks for the help @Calcmathlete

Answer 7

Do you understand? Right now, it's P(x + 1). It's asking for P(4). What value of x would make x + 1 = 4? x = 3.

Answer 8

yes

Answer 9

trying to solve now

Answer 10

P(4)=16? @Calcmathlete

Answer 11

I do believe so :)

Answer 12

thanks a lot

Answer 13

np :)