Question

4(a^4)-5(a^3)y-8a+10y

Answer 1

4a⁴ -5a³y -8a+10y=4а⁴- 8а - (5а³у-10у) = 4а*(а³-2) - 5у*(а³ - 2)= (а³-2)*(4а-5у)