(5–λ)(6–λ)(4–λ)–4(4–λ)–4(6–λ)怎么化简? 结果是(5–λ)(2–λ)(8–λ)

(5–λ)(6–λ)(4–λ)–4(4–λ)–4(6–λ)怎么化简? 结果是(5–λ)(2–λ)(8–λ)

这一题的正确答案是：5+8-9=47-6×4=43+2-1=4注意，此经典题目并未要求先做乘除后做加减（此时无解），而是按照数字出现顺序进行计算

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