Answer:
Step-by-step explanation:

So in order the trinomial a perfect square we need

When n is equal to this number that we have

I think you would put 570 in the blank since 19 x 3 = 57
Answer:
6
Step-by-step explanation:
2.5x6=15 and thats the closest it'll get. To be exact, it's 6.2, but i dont know if you need that.
-47,-21,-13,6,9,49,63,69 I think is the answer