Question

比较(X-2)/(X-10与(X-3)/(X-2)的大小

Answer 1

A=(x-2)(x-10)=(x-2)^2-8(x-2)

B=(x-2)(x-3)=(x-2)^2-(x-2)

当x0,A＞B

当x=2时,A＝B

当x>2时,-8(x-2)