Find all real solutions of the polynomial equation.
x^4 + 7x^3 + 6x^2 -22x +8 = 0

If the value of cos330°is√3/2 then find cos 165°.

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.