What is the missing constant term in the perfect square that starts with x^2 + 2x?

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

Jack is considering a list of features and fees for denver bank. jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?