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x-256x的5次方y的4次方

题目详情
x-256x的5次方y的4次方
▼优质解答
答案和解析
x-256x^5y^4
=x(1-256x^4y^4)
=x[1-(16x²y²)]
=x(1+16x²y²)(1-16x²y²)
=x(1+16x²y²)[1-(4xy)²]
=x(1+16x²y²)(1+4xy)(1-4xy)