因式分解(立方和立方差公式)-(1/8p³)-(1/64q³)(1/216)x³y
1个回答

-(1/8p³)-(1/64q³)

= - 1/64(8p³+q³)

= -1/64(2p+q)(4p²-2pq+q²)

(1/216)x³y³+(1/27)c³

=1/216 (x³y³+8c³)

=1/216(xy+2c)(x²y²-2xyc+4c²)

a²(m+n)³-a²b² 这题有没有打错?

=a² [ (m+n)³ - b²) ]

y²(x²-2x)³+y²

=y² [(x²-2x)³ +1]

=y² (x²-2x+1)[ (x²-2x)²-(x²-2x)+1]

=y²(x-1)²(x^4-4x³+3x²+2x+1)