плиз
2,3,4,5
пожалуйста не пишите не по теме

2. m(m+2) (m-2) - ( m-3) (m²+3m+9) = (m²+2m) (m-2) - (m³+3m²+9m-3m²-9m-27) = (m³-2m²+2m²-4m) - (m³-27) =m³-4m-m³+27= -4m+27 При m = 1/4 -4*1/4 +27 = -1+27 =26