Question

(-0.125)的667次方乘2的2005次方

Answer 1

1、原式

=（-0.5³)^667×2^2005

=(-0.5)^2001×2^2005

=-(1/2)^2001×2^2001×2^4

=-2^(-2001)×2^2001×2^4

=-2^0×16

=-1×16

=-16

2、(3x^3n)²-4(x²)^n

=9x^6n-4(x^2n)

=9(x^2n)³-4(x^2n)

=9×3³-4×3

=243-12

=231