x²-9/x²-3x化简是多少
问题描述:
x²-9/x²-3x化简是多少
答
x²-9/x²-3x
=(x-3)(x+3)/x(x-3)
=(x+3)/x
x²-9/x²-3x化简是多少
x²-9/x²-3x
=(x-3)(x+3)/x(x-3)
=(x+3)/x