во 2 стоит разность квадратов a) (m^1/4-n^1/2)^2-(m^1/4+n^1/2)^2=m^1/4-n^1/2-m^1/4-n^1/2)*(m^1/4-n^1/2+m^1/4+n^1/2)=-2n^1/2+2m^1/4 условие не пишу b) =m^2/3+6m^1/3n^1/2+9n+m^2/3-6m^1/3n^1/2+9n=2m^2/3+18n B) =(m^1/2)^2-(2n^1/4)^2=m-4n^1/2 г) разность кубов развернутая сворачиваем =m^3/2-(3n)^3=m^3/2-27n^3 3) =( 2^1/4-8^1/4)^2)^2-8^2=(2^1/2-2*2^1/4*8^1/4+8^1/2)^2-8^2=(2^1/2-2^2+8^1/2)^2-*64= (2:^1/2-4+2^3/2)^2-64= (2^1/2+2^3/2)-4)^2-64=(2^1/2+2^3/2)-4)^2-64=(2^1/2+2^3/2)^2- 2*(2^1/2+2^3/2)*4+16-64=(2^1/2+2^3/2)^2-8(2^1/2+2^3/2)-48=8v2+14-48=8v2-34 ответделала по частям -8*2^1/2-8*2^3/2=-2^3*2^1/2-2^3*2^3/2=-2^(3+1/2)-2^(3+3/2)=-2^7/2-2^9/2=-2^3v2-2^4v2=-8v2-16v2=-v2(8-16)=-v2(-8)=8v2 (2^1/2+2^3/2)^2=2+2*2^1/2*2^3/2+2^3=2+2^(1+1/2+3/2)+2^3=2+2^2+2^3=2+4+8=14 4) x^3/2-y^3/2/(x+x^1/2y^1/2+y)=(x^1/2)^3-(y^1/2)^3/(x+x^1/2y^1/2+y)= (x^1/2-y^1/2)(x+x^1/2y^1/2+y)/(x+x^1/2y^1/2+y)=x^1/2-y^1/2