已知关于x,y的多项式-ax²+2bxy+x²-x-2xy+y不含二次项,求5a-8b的值不要按ax²+2bxy+x²-x-2xy+y算的答案,要按-ax²+2bxy+x²-x-2xy+y算.今天就要!
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 18:00:54
![已知关于x,y的多项式-ax²+2bxy+x²-x-2xy+y不含二次项,求5a-8b的值不要按ax²+2bxy+x²-x-2xy+y算的答案,要按-ax²+2bxy+x²-x-2xy+y算.今天就要!](/uploads/image/z/6946067-11-7.jpg?t=%E5%B7%B2%E7%9F%A5%E5%85%B3%E4%BA%8Ex%2Cy%E7%9A%84%E5%A4%9A%E9%A1%B9%E5%BC%8F-ax%26%23178%3B%2B2bxy%2Bx%26%23178%3B-x-2xy%2By%E4%B8%8D%E5%90%AB%E4%BA%8C%E6%AC%A1%E9%A1%B9%2C%E6%B1%825a-8b%E7%9A%84%E5%80%BC%E4%B8%8D%E8%A6%81%E6%8C%89ax%26%23178%3B%2B2bxy%2Bx%26%23178%3B-x-2xy%2By%E7%AE%97%E7%9A%84%E7%AD%94%E6%A1%88%2C%E8%A6%81%E6%8C%89-ax%26%23178%3B%2B2bxy%2Bx%26%23178%3B-x-2xy%2By%E7%AE%97.%E4%BB%8A%E5%A4%A9%E5%B0%B1%E8%A6%81%21)
已知关于x,y的多项式-ax²+2bxy+x²-x-2xy+y不含二次项,求5a-8b的值不要按ax²+2bxy+x²-x-2xy+y算的答案,要按-ax²+2bxy+x²-x-2xy+y算.今天就要!
已知关于x,y的多项式-ax²+2bxy+x²-x-2xy+y不含二次项,求5a-8b的值
不要按ax²+2bxy+x²-x-2xy+y算的答案,要按-ax²+2bxy+x²-x-2xy+y算.今天就要!
已知关于x,y的多项式-ax²+2bxy+x²-x-2xy+y不含二次项,求5a-8b的值不要按ax²+2bxy+x²-x-2xy+y算的答案,要按-ax²+2bxy+x²-x-2xy+y算.今天就要!
-ax²+2bxy+x²-x-2xy+y不含二次项 (-a+1)x²+(2b-2)xy-x+y不含二次项 1-a=0 2b-2=0 a=1 b=1 5a-8b=5-8=-3