15xy/3x
4abc^4/2a^2
15xy/3xy^4
8x^2y/4xy
nth term of 1+3+6+10+........... is
6b^2/3b
$ - 3 y^{2} - 10 y - 3$
$ - \left(3 y + 1\right) \left(y + 3\right)$
15+1/2+3+3+3+8
