利用因式分解计算2¹ºº-2¹º¹的值为
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 21:15:17
![利用因式分解计算2¹ºº-2¹º¹的值为](/uploads/image/z/360858-66-8.jpg?t=%E5%88%A9%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E8%AE%A1%E7%AE%972%26%23185%3B%26%23186%3B%26%23186%3B%EF%BC%8D2%26%23185%3B%26%23186%3B%26%23185%3B%E7%9A%84%E5%80%BC%E4%B8%BA%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B%26%23160%3B)
利用因式分解计算2¹ºº-2¹º¹的值为
利用因式分解计算2¹ºº-2¹º¹的值为 ()
A.-2 B.2 C.2¹ºº D.-2¹ºº
利用因式分解计算2¹ºº-2¹º¹的值为
2^100-2^101
=2^100(1-2)
=-2^100
D
2¹ºº-2¹º¹
=2¹ºº-2×2¹ºº
=(1-2)×2¹ºº
=-1×2¹ºº
=-2¹ºº
选D
(1-2)2¹ºº =-2¹ºº
D
2¹ºº-2¹º¹
=2¹ºº-2¹ºº*2
=2¹ºº(1-2)
=-2¹ºº
2¹ºº-2¹º¹ = 2¹ºº-2¹ºº* 2 = 2¹ºº*(1 - 2)= -2¹ºº(利用提公因式法进行因式分解)
所以选D
=2^100*(1-2)=-2^100
2¹ºº-2¹º¹
=2¹ºº-2(¹ºº+1)
=2¹ºº(1-2)
=-2¹ºº
原式=2~100~*(1-2)=-2~100~
~ ~里是几次方
大概是这样了
a