SOLUTION: P(x) = x^4 − 81 (a) Find all zeros of P, real and complex. (Enter your answers as a comma-separated list. Enter all answers including repetitions.) (b) Factor P completely.

Algebra ->  Real-numbers -> SOLUTION: P(x) = x^4 − 81 (a) Find all zeros of P, real and complex. (Enter your answers as a comma-separated list. Enter all answers including repetitions.) (b) Factor P completely.      Log On


   

Question 1201301: P(x) = x^4 − 81
(a) Find all zeros of P, real and complex. (Enter your answers as a comma-separated list. Enter all answers including repetitions.)

(b) Factor P completely.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
P(x) = x^4 − 81 = (x^2 - 9)*(x^2 + 9)
= (x-3)*(x+3)*(x^2 + 9)