Сократите дробь и-2/и^3-8 a^3-8b^3/2a-4b 3cd+d/27c^3+1 x^3-1000z^3/x^2-100z^2 4и^2-9/8и^3+27

a^3-8b^3/2a-4b=
=a^3-4b^3*a-4b=
a^3-4ab^3-4b

3cd+d/27c^3+1=
=3cd+d/27*c^3+1=
3cd+c^3*d/27+1

x^3-1000z^3/x^2-100z^2=
= x^3-1000z^3/x^2-100z^2=
=x^5-1000z^3-100x^2+z^2/x^2