[(a+1/2b)²+(a-1/2b)²]·(2a²-1/2b²),其中a=-3,b=4
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/08 18:20:18
![[(a+1/2b)²+(a-1/2b)²]·(2a²-1/2b²),其中a=-3,b=4](/uploads/image/z/757907-35-7.jpg?t=%5B%28a%2B1%2F2b%29%26%23178%3B%2B%28a-1%2F2b%29%26%23178%3B%5D%C2%B7%EF%BC%882a%26%23178%3B-1%2F2b%26%23178%3B%EF%BC%89%2C%E5%85%B6%E4%B8%ADa%3D-3%2Cb%3D4)
x)H67JTS64HE~OQ"0yںɎ:I&6IET4MfV*4$ ƃ@b&6>@R*bdvxm`_\g
4 B*
[(a+1/2b)²+(a-1/2b)²]·(2a²-1/2b²),其中a=-3,b=4
[(a+1/2b)²+(a-1/2b)²]·(2a²-1/2b²),其中a=-3,b=4
[(a+1/2b)²+(a-1/2b)²]·(2a²-1/2b²),其中a=-3,b=4
[(a+1/2b)²+(a-1/2b)²]·(2a²-1/2b²)
=(a²+ab+1/4b²+a²-ab+1/4b²)(2a²-1/2b²)
=(2a²+1/2b²)(2a²-1/2b²)
=(18+8)(18-8)
=26×10
=260