意思,A.x = 0 onlyB.x = 2 onlyC.x = –1 onlyD.x = –1 or 2E.x = –1,0,or 2>GMAT中GWD的数学题Forwhichrealnumbersxistheexpression1/[(x-2)(x+1)]notdefined?看不懂
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【答案】 For which real numbers x is the expression1/[(x-2)(x+1)] not defined?
意思是：以下四个选项中x对于函数1/[(x-2)(x+1)]没有意义的是?
答案选C.