Question

Помогите с алгеброй 10 класс

Answer 1

1) (x+3y)^2=((747-537)/42)^2=25
2) 65.7721-82.9921=-17.22
3) (A-B)^3=(7*x*x+5*x-10-7*x*x-2*x+10)=(3*x)=0.3
4)
((y^3-1)*(y-1)^2-(y^3+1)*(y+1)^2)/(((y+1)^2)*((y-1)^2))=((y+1-y+1)/(y^2-1))=2/(y^2-1)