2道数学问题.要过程.1.x三次方+x三次方分之一.2.(x-y)²×(x+y)²×(x²-xy+y²)²(x²+xy+y²)²
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2道数学问题.要过程.1.x三次方+x三次方分之一.2.(x-y)²×(x+y)²×(x²-xy+y²)²(x²+xy+y²)²
2道数学问题.要过程.
1.x三次方+x三次方分之一.2.(x-y)²×(x+y)²×(x²-xy+y²)²(x²+xy+y²)²
2道数学问题.要过程.1.x三次方+x三次方分之一.2.(x-y)²×(x+y)²×(x²-xy+y²)²(x²+xy+y²)²
1.这里我设a=x,b=1/x(为了方便写式子)
则原式=a³+b³=(a+b)(a²-ab+b²)
然后代入就行了
2.原式=[(x+y)(x-y)]²[(x²+xy+y²)(x²-xy+y²)]²
=(x²-y²)²[(x²+y²)²-x²y²]²
问题都没有
是化简还是因式分解?
去玩玩儿
1、原式=(x+1/x)(x²-1+1/x²)
2、