For which values of x is the expression undefined?
3x + 21/6x + 6

Which value of c would make he following expression completely factored? 8x+cy

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer