Сократите дробь 1) x^2+xy --------------- x^2+2xy+y^2 2)a^2-2ab+b^2 --------------------...

Question

Сократите дробь
1) x^2+xy
---------------
x^2+2xy+y^2

2)a^2-2ab+b^2
--------------------
3a-3b

Answer 1

1)x^2+xy/x^2+2xy+y^2=x*(x+y)/(x+y)^2=x/x+y
2)a^2-2ab+b^2/3a-3b=(a-b)^2/3(a-b)=a-b/3