How do you factor x2 + 2xy + y2 -2^4

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

What dimensions can créate more than one triangle ?

Standard deviation of 19,29,21,22,23