(3xx+2)(5xxxx+2xx+3)-(5xxxx+xx+3)(3xx+3)的解

恺撒哥哥2022-10-04 11:39:541条回答

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李瑜ai 共回答了16个问题 | 采纳率93.8%: (3xx+2)(5xxxx+2xx+3)-(5xxxx+xx+3)(3xx+3)
=(3xx+2)(5xxxx+xx+3+xx)-(5xxxx+xx+3)(3xx+3)
=(3xx+2)(5xxxx+xx+3)+(3xx+2)xx-(5xxxx+xx+3)(3xx+3)
=(3xx+2-3xx-3)(5xxxx+xx+3)+(3xx+2)xx
=-5xxxx-xx-3+3xxxx+2xx
=-2xxxx+xx-3; 1年前

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