Sad bc my mom took away my ps4 and now I cant play fortnite or cod(gamer girl) Free pointslowkey bored just wanna talk

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?