if the polynomial x4 + 8x3 -5x2 +ax + b is exactly divisible by the polynomial 2x2-5 then find the values of a and b

On this question. a hypothermia occurs when a person's body temperature drops below 95 degrees fahrenheit. write and solve an inequality that describes how much lower the body temperature of a person with hypothermia will be than the body temperature of a person with a normal temperature of 98.6 degrees fahrenheit