题目内容
【题目】(x7y4+x7z )÷x7等于( )
A. y4+z B. -4x2y4+xz C. x2y4+x2z D. x2y4+z
【答案】A
【解析】(x7y4+x7z )÷x7=x7y4÷x7+x7z÷x7= y4+z,
故选:A.
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题目内容
【题目】(x7y4+x7z )÷x7等于( )
A. y4+z B. -4x2y4+xz C. x2y4+x2z D. x2y4+z
【答案】A
【解析】(x7y4+x7z )÷x7=x7y4÷x7+x7z÷x7= y4+z,
故选:A.