Help what the answer? its not -8/7. answer asap!?
5/8
-8/7
8/7

The answer is 5/8

Step-by-step explanation:

If it not -8/7 then it looks like a better option would be 5/8 sorry if this is not the right answer but I believe it is the right answer

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

a long term investor

step-by-step explanation:

because he is a long term investor