How do i factor (x+1)^3/2 - x^2(x+1)^1/2 ?

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?