1/2 (a+-b)2 what is the vule of the expression when a=18 and b=14

Asinusoidal function whose frequency is 1/6pi

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad

What is 10+10+20 about the origin the square root of a triangle.