解答
展开 ((x2⋅y)+((2⋅x)⋅y)+(c⋅x)+(2⋅c))3
解答
x6y3+c3x3+6x5y3+3cx5y2+3c2x4y+2c3x2+12x4y3+8c3+12xc3+8x3y3+4x2c3+18cx4y2+14c2x3y+36cx3y2+28c2x2y+24xc2y+24cx2y2+4x3c2y+8x2c2y
求解步骤
((x2y)+((2x)y)+(cx)+(2c))3
化简 (x2y)+((2x)y)+(cx)+(2c):x2y+(2x)y+cx+2c
=(x2y+2xy+cx+2c)3
化简 (x2y+2xy+cx+2c)3:(x2y+2xy+cx+2c)(x2y+2xy+cx+2c)(x2y+2xy+cx+2c)
=(x2y+2xy+cx+2c)(x2y+2xy+cx+2c)(x2y+2xy+cx+2c)
展开 (x2y+2xy+cx+2c)(x2y+2xy+cx+2c):x4y2+c2x2+4x3y2+4c2+2cx3y+4x2y2+4xc2+8cx2y+8cxy
=(x4y2+c2x2+4x3y2+4c2+2cx3y+4x2y2+4xc2+8cx2y+8cxy)(x2y+2xy+cx+2c)
打开括号=x4y2x2y+x4y2⋅2xy+x4y2cx+x4y2⋅2c+c2x2x2y+c2x2⋅2xy+c2x2cx+c2x2⋅2c+4x3y2x2y+4x3y2⋅2xy+4x3y2cx+4x3y2⋅2c+4c2x2y+4c2⋅2xy+4c2cx+4c2⋅2c+2cx3yx2y+2cx3y⋅2xy+2cx3ycx+2cx3y⋅2c+4x2y2x2y+4x2y2⋅2xy+4x2y2cx+4x2y2⋅2c+4xc2x2y+4xc2⋅2xy+4xc2cx+4xc2⋅2c+8cx2yx2y+8cx2y⋅2xy+8cx2ycx+8cx2y⋅2c+8cxyx2y+8cxy⋅2xy+8cxycx+8cxy⋅2c
化简 x4y2x2y+x4y2⋅2xy+x4y2cx+x4y2⋅2c+c2x2x2y+c2x2⋅2xy+c2x2cx+c2x2⋅2c+4x3y2x2y+4x3y2⋅2xy+4x3y2cx+4x3y2⋅2c+4c2x2y+4c2⋅2xy+4c2cx+4c2⋅2c+2cx3yx2y+2cx3y⋅2xy+2cx3ycx+2cx3y⋅2c+4x2y2x2y+4x2y2⋅2xy+4x2y2cx+4x2y2⋅2c+4xc2x2y+4xc2⋅2xy+4xc2cx+4xc2⋅2c+8cx2yx2y+8cx2y⋅2xy+8cx2ycx+8cx2y⋅2c+8cxyx2y+8cxy⋅2xy+8cxycx+8cxy⋅2c:x6y3+c3x3+6x5y3+3cx5y2+3c2x4y+2c3x2+12x4y3+8c3+12xc3+8x3y3+4x2c3+18cx4y2+14c2x3y+36cx3y2+28c2x2y+24xc2y+24cx2y2+4x3c2y+8x2c2y
=x6y3+c3x3+6x5y3+3cx5y2+3c2x4y+2c3x2+12x4y3+8c3+12xc3+8x3y3+4x2c3+18cx4y2+14c2x3y+36cx3y2+28c2x2y+24xc2y+24cx2y2+4x3c2y+8x2c2y