Given any triangle ABC labeled as shown, law of sines states: A. sin C/a = sin A/b = sin B/c
B. sin A/b = sin B/c = sin C/a
C. sin A/a = sin B/b = sin C/c
D. sin A/a = sin C/b = sin B/c

x = -5

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

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