Question

упростите: 12x*(x-5) во 2 степени +13*(x-4)*(x+4)

Answer 1

12х (х-5)^2+13 (х-4)(х+4)=12х (х^2-10х+25)+13 (х^2 -16)=12х^3- 120х^2+300х+13 х^2-208=12х^3-107х^2+300х-208