The nth term of a sequence is 3n. Work out the first three terms and the 10th term of the sequence.

Step-by-step explanation:

an=3n

a=3×1=3

a2=3×2=6

a3=3×3=9

a10=3×10=30

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

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