(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 12:37:15
(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
=(9a^4-1/4b^2)^2=81a^8-(9/2)a^4*b^2+(1/16)b^4
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/02 12:37:15
(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
(3a^2+1/2b)(3a^2-1/2b)(9a^4-1/4b^2)
=(9a^4-1/4b^2)^2=81a^8-(9/2)a^4*b^2+(1/16)b^4