The symmetric difference of two sets A and B is given by A∆B=(A∪B)-(A∩B).
Prove or Disprove the following statement (**)
If A, B and C are set satisfying A∆B=B∆C, then A=C.
** Hint: Think cases and proof can be formal or pictorial. How would you try and convince your class whether this statement is true or false?

answer. d.289 hope that

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

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