Whats the answer to this question

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Can someone me i’m confused. will give brainliest and a whole bunch of points

Bugs bunny was 33 meters below ground, digging his way toward pismo beach, when he realized he wanted to be above ground. he turned and dug through the dirt diagonally for 80 meters until he was above ground