How is it possible that the sum of two quadratic trinomials is a linear​ binomial? The coefficients of the terms whose exponents are

nothing sum to

▼

​Thus, the result is a linear binomial of degree

nothing.

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