6x-4y=3,3x-2y=3/2
9x²-4y²=(3x+2y)(3x-2y)
=4*(3/2)
=6
答题不容易,好的话请采纳
若3x+2y=4,6x-4y=3,则9x²-4y²=多少
若3x+2y=4,6x-4y=3,则9x²-4y²=多少
数学人气:404 ℃时间:2019-10-23 03:13:40
优质解答
我来回答
类似推荐
猜你喜欢
- 1如图,已知AB=1,点c是线段AB的黄金分翻点,试用一元二次方程求根公式验证黄金比AC/AB=5−12.
- 2They have eggpiant and fish for lunch.写出问句
- 3When I handed the report to John,he said that George was the person_____.
- 4描写自然风光的古诗词
- 5已知|X-1|+(Y+2)的平方=0,求(X+Y)的2007次幂的值
- 6有理数加法法则字母公式.
- 7降低电容器边缘效应的措施
- 8改错:this pair of jeans don't fit me at all Mother says she won't pay 300 yuan at a pair of jeans
- 9培养细菌的培养基和培养真菌的培养基有什么区别
- 10---关于职业的造句----------