x,a,bx,a,bx,a,b 均为正整数,且x(a+b)=b×(ab)x^{(a+b)}=b\times (a^b)x(a+b)=b×(ab)求证 x=a,b=xxx=a,b=x^xx=a,b=xx
只会证到a∣xa\mid xa∣x /ll