Find the value of a.
Thanks so much for the answers im just really bad at math sorta

Could someone with number 1 and 2

State one method by which you can recognize a perfect square trinomial.

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers