写出下列等式中未知的分子或分母 (4-x^2)/(x+2)^2=( )/(x+2)
问题描述:
写出下列等式中未知的分子或分母 (4-x^2)/(x+2)^2=( )/(x+2)
答
(4-x^2)/(x+2)^2=( )/(x+2)的分子为(2-x)
写出下列等式中未知的分子或分母 (4-x^2)/(x+2)^2=( )/(x+2)
(4-x^2)/(x+2)^2=( )/(x+2)的分子为(2-x)