Which numbers in Set A = {–7, –4, 2, 14, 21, 34, 42} are elements of both Set B and Set C, shown below?

the answer to your question a or b but i am pretty sure it is b. i hope this : )

step-by-step explanation:

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

step-by-step explanation:

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