(4a4−3b)⋅2b−3b⋅(6a4−4b)

Question

(4a4−3b)⋅2b−3b⋅(6a4−4b)

Answer 1

...=4а^4-3b-5b-6a^4+4b=-2a^4-4b

Answer 2

(4a4-3b)*2b-3b*(6a4-4b)=8a4b-6b2-18a4b+12b2=6b2-10a4b=2b*(3b-5a4)