Write as a product:
x2+y2+2xy –1

What is the simplified expression for 6(2(y+x))

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236