Plslllsss helllolpl

364

Step-by-step explanation:

First you take half of the base, which is 4, and multiply it by the height of 13. This will give you an area of 52 which you then multiply by 7 to get 364.

4 x 13 = 52

52 x 7 = 364

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