What are the first 5 terms of the sequence if; an=2(an-1+an-2), a1=-2, a2=-3? ? a. –3, –2, –10, –24, –68 b. –3, –2, –4, –8, –16 c. –2, –3, –10, –26, –72 d. –2, –3, –5, –8, –13

14

step-by-step explanation:

14 x 3 = 42

the correct option is b

step-by-step explanation:

i believe the answer is 323 ft

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