Can someone plz help me

Find the complete factored form of the polynomial 40m^3n^2+45m^2n^6

This is so hard and it’s for a test

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days