Can someone me Help please

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

Marlow is comparing the prices of two trucks rental compaines company a charges $3 per hour and an addtional $75 as serivce charges company b charges $2 per hour and an additional $85 as serivce charges

The diagram shows a cuboid abcdefgh abcd is a square with area 25cm². find the volume of the cuboid.