More math I suck at *math inscribed angles and/ circles

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

Acar travels at an average speed of 52 miles per hour. how long does it take to travel 299 miles

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93