prosze o pomoc

a) V=a^3=(3+\/2)^3=(3+\/2)(3+\/2)(3+\/2)=(9+3\/2+3\/2+2)(3+\/2)= =(11+6\/2)(3+\/2)=33+11\/2+18\/2+6*2=33+29\/2+12=45+29\/2 Pc6*a^2=6*(3+\/2)^2=6*(9+6\/2+2)=6*(11+6\/2)=66+36\/2 b) V=a^3=(2\/3-1)^3=(2\/3)^3-3*(2\/3)^2+3*2\/3*(-1)^2-1^3=24\/3-3*4*3+6\/3-1= =30\/3-36-1=30\/3-37 2\/3)^3=2^3*(\/3)^3=8*\/27=8*\/9*3=8*3\/3=24\/3 Pc=6*a^2=6*(2\/3-1)^2=6(4*3-2*2\/3+1)=6*(13-4\/3)=78-24\/3

V=(\/6+\/2)^3=(\/6)^3+3*(\/6)^2*\/2+3*\/3*(\/2)^2+(\/2)^3= =6\/6+18\/2+6\/6+2\/2=12\/6+20\/2 \/6)^3=\/6^3=\/6*6*6=\/36*6=6\/6 3*\/3*(\/2)^2=3*\/3*2=6\/3 Pc=6*a^2=6*(\/6+\/2)^2=6*(6+2*\/12+2)=6*(6+2*\/(4*3)+2=6*(10+2*2*\/3)= =6(8+4\/3)=48+24\/3