Question

Let f(x)=x^2+2x-2 and g(x)=2-3x. Find the following: a.) f(-1) b.) g(-3) c.) f(a+2)

Answer 1

f(-1) =(-1)^2 +2(-1)-2 = 1-2-2 = -3
g(-3) = 2-3(3) = 2-9 = -7
f(a+2) = (a+2)^2 +2(a+2)-2

Answer 2

thank you @lalaly :)

Answer 3

also note that
\[f(a+h)=(a+2)^2+2(a+2)-2\]
\[=a^2+4a+4+2a+4-2\]

\[=a^2+6a+6\]

Answer 4

yesss:D

Answer 5

Okay, thank you @satellite :)

Answer 6

lala, i have a question

Answer 7

g(-3) = 2-3(3) = 2-9 = -7

isn't it supposed to be 11? because 2-3(-3) = 2+9