(12-р)^2 (-m-10)^2 (7y+6)^2 (10z+3t)^2 (p^2-10)^2
= (144 - 24p + p^2) (100 + 20m + m^2) (49y^2 + 84y + 36) (100z^2 + 60zt + 9t^2) (p^4 - 20p^2 + 100)
(12-р)^2 (-m-10)^2 (7y+6)^2 (10z+3t)^2 (p^2-10)^2
= (144 - 24p + p^2) (100 + 20m + m^2) (49y^2 + 84y + 36) (100z^2 + 60zt + 9t^2) (p^4 - 20p^2 + 100)