15分之4x27+15分之4x3

2024-12-10 18:15:31
推荐回答(3个)
回答1:


回答2:

1.x3+27=(x+3)(x2-3x+9) 2.x?-x3+27x-27=(x-1)(x+3)(x2-3x+9)

回答3: