4b²c²-(c²+b²)²急求
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/25 12:32:57
![4b²c²-(c²+b²)²急求](/uploads/image/z/3712675-67-5.jpg?t=4b%26%23178%3Bc%26%23178%3B-%28c%26%23178%3B%2Bb%26%23178%3B%29%26%23178%3B%E6%80%A5%E6%B1%82)
x)3IRS64NPP6T\B=kXlcMR>:lhhXQR&~
/Ox>eӝMtkhj 4/j'
U5JL+hyx:H.UIF 1 !-w
4b²c²-(c²+b²)²急求
4b²c²-(c²+b²)²急求
4b²c²-(c²+b²)²急求
4b²c²-(c²+b²)²
=(2bc)²-(c²+b²)² 运用平方差公式
=[2bc+(c²+b²)] [2bc-(c²+b²)]
=(b²+2bc+c²)[-(b²-2ab+c²) ]
=(b+c)²×[-(b-c)²]
= -(b+c)²(b-c)²