Which value must be added to the expression x2 + 12x to make it a perfect-square trinomial?

Equation for the calculation double 2 and then add 5

James is playing his favorite game at the arcade. after playing the game 33 times, he has 88 tokens remaining. he initially had 2020 tokens, and the game costs the same number of tokens each time. the number tt of tokens james has is a function of gg, the number of games he plays

Need so much on this one how many yards?