1. what number should be added to the expression x^2+2x to change it into a perfect square trinomial?

a. 1

b. 2

c. 4

d. 9

2. what number should be added to the expression x^2+14x to change it into a perfect square trinomial?

a. 7

b. 14

c. 28

d. 49

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.