一.化简.5(a+b)²-3(2a+3b)-3(a+b)²+(2a+3b)
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/06/04 03:03:48
一.化简.5(a+b)²-3(2a+3b)-3(a+b)²+(2a+3b)
二.已知(x-6)²+|y+1|=0,求﹙﹣x+2y/3﹚-2/3(x+1/2y)的值
二.已知(x-6)²+|y+1|=0,求﹙﹣x+2y/3﹚-2/3(x+1/2y)的值
5(a+b)²-3(2a+3b)-3(a+b)²+(2a+3b)
=5(a+b)^2-6a-9b-3(a+b)^2+2a+3b
=2 (-2 a + a^2 - 3 b + 2 a b + b^2)
(x-6)²+|y+1|=0,
x=6
y=-1
﹙﹣x+2y/3﹚-2/3(x+1/2y)
=(-6-2/3)-2/3(6-1/2)
=-(31/3)
=5(a+b)^2-6a-9b-3(a+b)^2+2a+3b
=2 (-2 a + a^2 - 3 b + 2 a b + b^2)
(x-6)²+|y+1|=0,
x=6
y=-1
﹙﹣x+2y/3﹚-2/3(x+1/2y)
=(-6-2/3)-2/3(6-1/2)
=-(31/3)
一.化简.5(a+b)²-3(2a+3b)-3(a+b)²+(2a+3b)
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
2b²+(a+b)(a-b)-(a-b)²,其中a=-3
若a,b满足|a+5b-2|+(a+b-6)²=0,求代数式(a-3b)(a+2b)-(a+5b)(a+3b)
计算代数式a-b+(a-2b)(a-b)+(a-2b)(a-b)²+(a-2b)(a-b)^3 当a=-3
化简-3a-a+b+2b²+a+b-2b²=?
(5a-3b)-3(a²-2b)化简
(3a+b)²+2(a+3b)(3a+b)+(a+3b)²
0 a a+b 2a+b 2a+2b 3a+2b 3a+3b 4a+3b 4a+4b 5a+4b 5a+5b …… 求一
(a+b)²-3/2(a+b)-¼(a+b)²+(-2)³(a+b)