EXERCISE 1.2 General section
1. a) If n(A) = x, n(B) = y and n(
AB) = z, show this information in a Venn-dia
show that n (AUB) = n(A) + n(B) - n(
AB).​

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

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?

sorry not knowing about that