a^2-3a-1=0,则代数式a^3-10=?
a^2-3a-1=0,则代数式a^3-10=?
数学人气:183 ℃时间:2019-10-11 08:24:30
优质解答
a^2-3a-1=0,a²-3a=1则代数式a^3-10=a³-3a²+3a²-10=a(a²-3a)+3a²-10=a×1+3a²-10=a+3a²-10=3a²+a-10=3a²-9a+10a-10=3(a²-3a)+10a-10=3+10a-10=10a-7题目...
我来回答
类似推荐
猜你喜欢
- 1英译汉:I like playing the guitar in a band in my free time.
- 2The street is it quiet
- 3抛物线y=ax^2+c与y=3x^2的形状相同,且其顶点坐标是(0,1),则其表达式为什么?
- 4挖一条长400米的水渠已挖了全长的5分之3已挖了多少米
- 5高一的英语翻译There was plenty of time,she need not have hurried to the station
- 6物质从液态到固态和固态到液态相互转化需要什么条件?
- 7需要详细算式.
- 8小名计划10天看完一本书,由于每天多看2页,结果8天就看完,这本书一共多少页?
- 91+1等于几?2 11 田 王
- 10We must study English hard or we can't be in the library,(反义疑问句)