First five terms for both. f(1) = 10, f(n) = f(n - 1) - 1.5 for n ≥ 2

b(1) = 2, b(n) = 2 * b(n - 1) - 1 for n ≥ 2

if you need just tell me and i will come to the rescue.

step-by-step explanation:

probably .5

i can on others if necessary.

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