给你参考的：a^3b+2a^2b^2+ab^3=ab(a^2+2ab+b^2)=ab(a+b)^2=2×2/3×2/3=8/9
a^3b+2a^2b^2+ab^3=ab(a^2+2ab+b^2)=ab(a+b)^2=2×2/3×2/3=8/9
a^3b+2a^2b^2+ab^3=ab(a^2+2ab+B^2)=ab(a+b)^2=8/9
9分之8
