一道初二的数学题。高手请进

化简下列数式:0.001^n+1 x 100^3n-1
2025-04-08 06:58:47
推荐回答(3个)
回答1:

=(0.001 *100)^n+1 * 100^2n-2 =0.1^n+1*100^2n-2=(0.1* 10)^n+1 * 10^3n-5=10^3n-5

回答2:

0.001^n+1 x 100^3n-1
=(1/1000)^(n+1)x100^(3n-1)
=10^(-3n-3)x10^(6n-2)
=10^(-3n-3+6n-2)
=10^(3n-5)

回答3:

y=x+3
y=—x/2

既x+3=—x/2
同乘以2
得2(x+3)=-x
2x+6=-x
3x=-6
x=-2
带入两个式子中任意一个

y=1