计算下列算式,(2x²)³-6x³(x³+2x²+x)

问题描述:

计算下列算式,(2x²)³-6x³(x³+2x²+x)
[(x+y)²-(x-y)²]÷2xy
a²(a+1)²-2(a²-2a+4)

(2x²)³-6x³(x³+2x²+x)=8d的6次方-6x的6次方-12x的5次方-6x的4次方=2x的6次方-12x的5次方-6x的4次方[(x+y)²-(x-y)²]÷2xy=(x+y+x-y)(x+y-x+y)÷2xy=2x*2y ÷2xy=2a²...