化简求值:【(4X-3y/2)(4X+3y/2)4XY-Y/4(16X-9Y)】*8X X=2
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 17:48:11
xJ1_vvc},Ҁ>,zBbAx&62ݬ}f^sc*ߧk|_\Z?!%))Y&4Qe)zǐ_hU'{jf|]Y6U^_.[Ð(R>̄%
GD^28b`5
Ń?uDs)2S&b-eJHmuy]t_ͼū
化简求值:【(4X-3y/2)(4X+3y/2)4XY-Y/4(16X-9Y)】*8X X=2
化简求值:【(4X-3y/2)(4X+3y/2)4XY-Y/4(16X-9Y)】*8X X=2
化简求值:【(4X-3y/2)(4X+3y/2)4XY-Y/4(16X-9Y)】*8X X=2
因为x=2
所以将代数式展开可以得[(64x^3y-9xy^3)-y/4(16x-9y)]*8x
=2^9x^4y-2^3*9x^2y^3-2xy(16x-9y)
=2^13y-2^5*9y^3-2^7y+2^2*9y^2
=-288y^3+36y^2+3968y