未知题型
For all real numbers p and r, p◇r= pr- p+r.
Column A Column B
(-4)◇5 5◇(-4)
A.if the quantity in Column A is greater
B.if the quantity in Column B is greater
C.if the two quantity are equal
D.if the relationship cannot be determined from the information given
A.ColumnB.if
C.if
D.if
E.if
【参考答案】
A
解析：对于所有的实数(realnumber)p和r，有p◇r=pr-p+r成立。解：本题的正确答案为(A)。......
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的是
