Question

Сократить дроби, помогите!!!

Answer 1

V знак корня

1)
=(Va-2)(Va+2)/(Va+2)=Va-2

2)
=(Vb-3)(Vb+3)/(Vb-3)=Vb+3

3)
=(Vx^3 +27)/(Vx+3)=
=(Vx+3)(x-3Vx+9)/(Vx+3)=
=x-3Vx+9

4)
=(Vy-Vx)(x+Vxy+y)/(x+Vxy+y)=
=Vy-Vx

5)
=(Vx +3)(Vx +2)/(Vx +3)=
=Vx +2