A Little Extra Credit! Which of the following parent functions keep its same
DOMAIN when transformed?
(Select all that apply)
Linear
Quadratic
Absolute Value
Square Root
Cubic
Cubed Root
Log
Exponential
Rational

Rational, av, li ear, i think thats all

Step-by-step explanation:

what is the information provided?

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb