Nếu sai xin được đóng góp để sửa,xin đừng báo cáo
a)`x³ +1`
`=(x+1)(x²-x+1)`
b`)x³ + y^3`
`=(x+y)(x²-xy+y^2)`
c)`x³ + 8`
`=x³ + 2^3`
`=(x+2)(x² - 2x + 4)`
d)`27 + y^3`
`=3^3 + y^3`
`= (3+y)(9 - 3y + y^2)`
e)`8x^3 + 1`
`=(2x)³ + 1`
`=(2x + 1)(4x² - 2x + 1) `
f)`64 + 27x^3`
`=4^3 + (3x)^3`
`=(4 + 3x)(16 - 12x + 9x²)`
g) `1/64 x^6 y^3 +125`
`=(1/4 x² y)³ + 5^3`
`=(1/4 x² y + 5)(1/16 x^4y^2 - 5/4 x² y + 25)`
h)` x^3y^6 + 8z^6`
`=(xy^2)³ + (2z²)³`
`=(xy^2 + 2z)(x^2y^4 - 2xy^2z + 4z^4)`
i)`1/125 + 64x^6`
`=(1/5)³ + (4x²)³`
`=(1/5 + 4x²)(1/25 - {4x^2}/5 + 16x^4)`
