2) The mean radius of Earth is 6,731.0 kilometers and the mean radius of Earth's moon is 1,737.5 kilometers. Which of the following is closest to the approximate difference in the mean
circumferences, in kilometers, of Earth and Earth's moon?

answer: -0.5 would be the most likley outcome

step-by-step explanation:

explanation:

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