3x²-xy²+3x-y² 3x的四次幂+6x²-9(1)3x²-xy²+3x-y²(2)3x的四次幂+6x²-9 (3)x的四次幂-3x²-4 (4)4b²c²-(b²+c²-a²)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/20 04:11:50
![3x²-xy²+3x-y² 3x的四次幂+6x²-9(1)3x²-xy²+3x-y²(2)3x的四次幂+6x²-9 (3)x的四次幂-3x²-4 (4)4b²c²-(b²+c²-a²)²](/uploads/image/z/3182642-26-2.jpg?t=3x%26%23178%3B-xy%26%23178%3B%2B3x-y%26%23178%3B+3x%E7%9A%84%E5%9B%9B%E6%AC%A1%E5%B9%82%2B6x%26%23178%3B-9%EF%BC%881%EF%BC%893x%26%23178%3B-xy%26%23178%3B%2B3x-y%26%23178%3B%EF%BC%882%EF%BC%893x%E7%9A%84%E5%9B%9B%E6%AC%A1%E5%B9%82%2B6x%26%23178%3B-9+%EF%BC%883%EF%BC%89x%E7%9A%84%E5%9B%9B%E6%AC%A1%E5%B9%82-3x%26%23178%3B-4+%EF%BC%884%EF%BC%894b%26%23178%3Bc%26%23178%3B-%EF%BC%88b%26%23178%3B%2Bc%26%23178%3B-a%26%23178%3B%EF%BC%89%26%23178%3B)
3x²-xy²+3x-y² 3x的四次幂+6x²-9(1)3x²-xy²+3x-y²(2)3x的四次幂+6x²-9 (3)x的四次幂-3x²-4 (4)4b²c²-(b²+c²-a²)²
3x²-xy²+3x-y² 3x的四次幂+6x²-9
(1)3x²-xy²+3x-y²(2)3x的四次幂+6x²-9 (3)x的四次幂-3x²-4 (4)4b²c²-(b²+c²-a²)²
3x²-xy²+3x-y² 3x的四次幂+6x²-9(1)3x²-xy²+3x-y²(2)3x的四次幂+6x²-9 (3)x的四次幂-3x²-4 (4)4b²c²-(b²+c²-a²)²
3x²-xy²+3x-y²
=x(3x-y²)+(3x-y²)
=(3x-y²)(x+1)
3x^4+6x-9
=3(x^4+2x-3)
=3(x²+3)(x²-1)
=3(x²+3)(x-1)(x+1)
x^4-3x²-4
=(x²-4)(x²+1)
=(x-2)(x+2)(x²+1)
4b²c²-(b²+c²-a²)²
=(2bc-b²-c²+a²)(2bc+b²+c²-a²)
=[a²-(b²-2bc+c²)][(2bc+b²+c²)-a²]
=[a²-(b-c)²][(b+c)²-a²]
=(a-b+c)(a+b-c)(b+c-a)(b+c+a)