Сократите дробь: у^2+y ---------; y^2 a^2-2a ----------; a^2-4

Question

Сократите дробь:
у^2+y
---------;
y^2

a^2-2a
----------;
a^2-4

Answer 1

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Answer 2

(y^2+y)/ y^2=y(y+1)/y^2=(y+1)/y
(a^2-2a)/(a^2-4)= a(a-2)/(a-2)(a+2)=a/(a+2)