m^(2)-10mn+25n^(2) m-5n (m - 5n)^2 * 6mn m - 5n
_________________ : _______ = ___________________ = _________
12m^(3)n^(2) 6mn 12m^(3)n^(2) (m - 5n) 2m^(2) n
(5p)^(2) * q^(-7) (r^(2)q^(3))^(3) (5p)^(2) * r^(6)*q^(9)
_______________ * ______________ = __________________ = p * q^(2)
r^(6) 5p r^(6) * 5p * q^(7)