What is the result of subtracting the second equation from the first? x-3y=6 -8x-y=6 (picture included if confusing) : (

8(x-3y=6)

8x-24y=48

-8x-y=6

-25y= 42

then u divide both sides by -25

y > 1/3x

y < = -x + 4

hope this : )

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