Question 995742
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Write the polynomial as the product of linear factors. List all the zeroes of the function as well. 
f(x) = x4 − 81 
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f(x) = {{{x^4-81}}} = {{{(x^2-9)*(x^2+9)}}} = {{{(x-3)*(x+3)*(x-3i)*(x+3i)}}}


is factorization of the polynomial into the product of linear factors.

Notice that the two last factors include complex numbers.


The roots of the polynomial are -3, 3, -3i and 3i.