分解因式-x²y²+2xy-1
问题描述:
分解因式-x²y²+2xy-1
答
-x²y²+2xy-1
=-(X²Y²-2XY+1)
=-(XY-1)²
分解因式-x²y²+2xy-1
-x²y²+2xy-1
=-(X²Y²-2XY+1)
=-(XY-1)²