Question

Find each of the following.
f(x) = |x + 3|
g(x) = -x^2
(gf)(3) =
(fg)(8) =
(ff)(1) =

Answer 1

for the first i got 54 but it's wrong. what am i doing wrong?
this is how i did the first: -3^2(3+3)=9(6)=54

Answer 2

My latest answer is 12 but thats wrong too

Answer 3

for the first one of course not the whole thing

Answer 4

Is g(x) = -(\(x^2\)) or (\(-x)^2\)?

g(f(3)) = g(|x+3|)
= g(|3+3|)
= g(6)
= -(6)^2
= -36

Answer 5

it's just -x^2 without any parenthesis.

Answer 6

i have to add my own parenthesis? i got 36 earlier because i did -6 times -6, which is 36.

Answer 7

It depends on which way you read it. Using the BEMDAS / PEMDAS / BIRDMAS rules, you're supposed to solve the exponents / indices / roots first, and then do multiplication. So when you have

-x^2

you're supposed to do the x^2 part first, and then multiply the whole thing by -1.

Answer 8

ok ok

nice profile pic by the way haha

Answer 9

Thank you. Psyence rules.

Answer 10

lolz
pokemon's my sh*t haha
...science and math... kind of, sort of. haha