1) (150)^(3/2):(6^(3/2)=(150/6)^(3/2)=(25)^(3/2)=((5^2))^(3/2)=5^3=125
3)(2/3)^(-2)-(1/27)^(1/3)+3*(589)^0=(3/2)^2-∛(1/27)+3*1=9/4-1/3+3=5+1/4-1/3=5-1/12=4+11/12
4) (∛128+∛1/4):∛2=∛128/∛2+∛1/4/∛2=∛128/2+∛1/4/2=∛64+∛1/8=4+1/2
5) (12^(2/3)*(3^(7/3)):4^(-1/3)=(3^(2/3)*4^(2/3)*(3^(7/3)*4^(1/3)=27*4=108
3(^2/3)*3^(7/3)=3^(2/3+7/3)=3^(9/3)=3^3=27
4^(2/3)*4^(1/3)=4^(2/3+1/3)=4^(3/3)=4^1=4
12^(2/3)=(3*4)^(2/3)=3^(2/3)*4^(2/3)
1/(4^(-1/3)=4^(1/3)
Ответ:
10+4(m-n);
2m^2-2n^2
Объяснение:
10+4m-4n=10+4(m-n)
2(m+n)(m-n)=2(m^2-n^2)=2m^2-2n^2
4х=-3у
х=5-у
подставляем
4(5-у)=-3у
20-4у=-3у
20=у
подставляем и узнаем х
х =5-20=-15