Finding algebraic expressions for the range and time-of-flight of a projectile in terms of Vo, h, theta, and t?

When i solved this I came up with t=Vocosθ + (((Vosinθ)2 +2gh)1/2)/g and R=Vocosθt. I used the quadratic formula to get these, however, they don't seem to be working. Could someone help me (with work?) I really need to understand the algebra. Thanks!!!!