已知x为整数,且(x+3)分之2+(3-x)分之2+(x²-9)分之(2x+18)为整数,则x的值=
问题描述:
已知x为整数,且(x+3)分之2+(3-x)分之2+(x²-9)分之(2x+18)为整数,则x的值=
答
可化简为2(X+3)/(x²-9)+2(X-3)/(x²-9)+(2x+18)/(x²-9)=6/(X-3)后面就可以做了我要答案...-3,0,4,6,9