2x²+3xy-2y²
=(2x-y)(x+2y)你算错了!多了一个y²没错呀,问题打错了。。。。是2x²+3xy-y²
猜你喜欢
- 1在长12.4cm,宽7.2cm的长方形纸中,剪半径是1cm的圆,能剪多少个?
- 2氮气的物理性质和化学性质是什么?
- 3He hardly has breakfast ,_______ _______ (改为反义疑问句)
- 4when you come into the reading room,please___________.
- 5it's 形容词 for sb to do sth如题
- 6Have a good day.怎么翻译?
- 7if he will have not came here before 5 oclock,we will leave here early.
- 8求该函数的导数 y=3√(1+cos2x)
- 9lucy fell off ()bike.()hurt ()badly
- 10水落石出四个字中哪个字是形声字