(3a²-b²)-3(a²-2b²)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/24 23:36:14
(3a²-b²)-3(a²-2b²)
![(3a²-b²)-3(a²-2b²)](/uploads/image/z/1615259-11-9.jpg?t=%283a%26%23178%3B-b%26%23178%3B%EF%BC%89-3%EF%BC%88a%26%23178%3B-2b%26%23178%3B%EF%BC%89)
(3a²-b²)-3(a²-2b²)=(3a²-3a²)+(-b²+6b²)=5b²
2b²+(a+b)(a-b)-(a-b)²,其中a=-3
(1)2b²+(a+b)(a-b)-(a-b)²其中a=-3,b=1/2
先化简,再求值:(a-2b)²+(a-b)(a+b)-2(a-3b)(a-b),其中a=-½,b=-
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
一.化简.5(a+b)²-3(2a+3b)-3(a+b)²+(2a+3b)
【(a-b)4次方+3(b-a)³+2(b-a)²】/【½(a-b)】²
化简 (2+b)²+(a-b)(2a+b)-3a²
计算:3b²/4a³÷(b³/a²)×2b/a
先化简再求值 (a-2b)(a²+2ab+4b²)-a(a-5b)(a+3b),其中a=-1,b=2
计算代数式a-b+(a-2b)(a-b)+(a-2b)(a-b)²+(a-2b)(a-b)^3 当a=-3
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
a(a-b)ˇ3+2a²(b-a)²-2ab(b-a) 因式分解