Y的5次方减Y的三次方4乘以X的三次方减64乘以X

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Y的5次方减Y的三次方4乘以X的三次方减64乘以X
Y的5次方减Y的三次方
4乘以X的三次方减64乘以X

Y的5次方减Y的三次方4乘以X的三次方减64乘以X
1.y^5-y^3=y^3(y^2-1)
2.4*x^3-64*x=4x(x^2-16)