Question

Write a linear factorization of the function.
f(x) = x^4 + 81x^2

Answer 1

\[\Large a^2 + b^2 = (a + bi)(a - bi)\]

Answer 2

So it's f(x) = x2 (x + 9i)(x - 9i)?

Answer 3

You may have to write x^2 as x * x because x^2 is not a linear factor.

Answer 4

Thank you!

Answer 5

you are welcome.