1) Whats the formula for the Square of a Sum? 2) How do you use the formula for the product of a sum and difference?

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll

Aseason pass to the local water park costs 84. if you go to the park ten times during the season, what is the unit rate of cost per visit?