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(a b) *(a B)
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(a b) *(a-b)
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Question
简化表达式
a
2
b
−
a
b
2
求值
ab
(
a
−
b
)
应用分配属性
aba
−
ab
×
b
乘以项
a
2
b
−
ab
×
b
Solution
a
2
b
−
a
b
2
Show Solution