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> 请从下列三个代数式中任选两个(一个作为分子,一个作为分母)构造一个分式,并化简该分式.(a2-1,a2-a,a2-2a+1)然后请你自选一个合理的数代入求值.-数学
请从下列三个代数式中任选两个(一个作为分子,一个作为分母)构造一个分式,并化简该分式.(a2-1,a2-a,a2-2a+1)然后请你自选一个合理的数代入求值.-数学
题目简介
请从下列三个代数式中任选两个(一个作为分子,一个作为分母)构造一个分式,并化简该分式.(a2-1,a2-a,a2-2a+1)然后请你自选一个合理的数代入求值.-数学
题目详情
请从下列三个代数式中任选两个(一个作为分子,一个作为分母)构造一个分式,并化简该分式.
(a
2
-1,a
2
-a,a
2
-2a+1)然后请你自选一个合理的数代入求值.
题型:解答题
难度:中档
来源:西宁
答案
答案不唯一,如:
a
2
-a
a
2
-2a+1
=
class="stub"a
a-1
∵a≠1,
∴当a=0时,原式=0.
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题目简介
请从下列三个代数式中任选两个(一个作为分子,一个作为分母)构造一个分式,并化简该分式.(a2-1,a2-a,a2-2a+1)然后请你自选一个合理的数代入求值.-数学
题目详情
(a2-1,a2-a,a2-2a+1)然后请你自选一个合理的数代入求值.
答案
∵a≠1,
∴当a=0时,原式=0.