化简:(1)[2b-3+2(a²-1)]-(4a²-3b²)(2)(3x²y-xy²)-3(x²y-2xy²)[2b²-3+2(a²-1)]-(4a²-3b²)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 17:44:22
![化简:(1)[2b-3+2(a²-1)]-(4a²-3b²)(2)(3x²y-xy²)-3(x²y-2xy²)[2b²-3+2(a²-1)]-(4a²-3b²)](/uploads/image/z/3694570-34-0.jpg?t=%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%881%EF%BC%89%5B2b-3%2B2%EF%BC%88a%26%23178%3B-1%EF%BC%89%5D-%EF%BC%884a%26%23178%3B-3b%26%23178%3B%EF%BC%89%EF%BC%882%29%EF%BC%883x%26%23178%3By-xy%26%23178%3B%EF%BC%89-3%EF%BC%88x%26%23178%3By-2xy%26%23178%3B%EF%BC%89%5B2b%26%23178%3B-3%2B2%EF%BC%88a%26%23178%3B-1%EF%BC%89%5D-%EF%BC%884a%26%23178%3B-3b%26%23178%3B%EF%BC%89)
化简:(1)[2b-3+2(a²-1)]-(4a²-3b²)(2)(3x²y-xy²)-3(x²y-2xy²)[2b²-3+2(a²-1)]-(4a²-3b²)
化简:(1)[2b-3+2(a²-1)]-(4a²-3b²)
(2)(3x²y-xy²)-3(x²y-2xy²)
[2b²-3+2(a²-1)]-(4a²-3b²)
化简:(1)[2b-3+2(a²-1)]-(4a²-3b²)(2)(3x²y-xy²)-3(x²y-2xy²)[2b²-3+2(a²-1)]-(4a²-3b²)
化简:
(1)[2b-3+2(a²-1)]-(4a²-3b²)
=2b -3 +2a²-2 -4a²+3b²
=2b -5 -2a²+3b²
(2)(3x²y-xy²)-3(x²y-2xy²)
=3x²y-xy²-3x²y+6xy²
=-xy²+6xy²
= 5 xy²
5b²-2a²-5