Complete the factoring by filling in the empty box.

$9ix-54=9i\left(\editable{}\right)$9ix−54=9i()

Factor the expression $x^2+25$x2+25. Leave your answer in terms of $i$i.

Factor the expression $64x^2+81$64x2+81. Leave your answer in terms of $i$i.

Factor the expression $3x^2+108$3x2+108. Leave your answer in terms of $i$i.

(+) Extend polynomial identities to the complex numbers.