Question

若M乘(2ab-a平方b平方)=-6a三次方b平方+3a四次方b四次方,则M=

Answer 1

m(2ab-a^2b^2)=-6a^3b^3+3a^4b^4=-3a^2b^2(2ab-a^2b^2)

则

m=-3a^2b^2