Question

4的1991次方再去乘以负二分之一的2002次方等于多少?

Answer 1

4^2001*0.5^2004

=4^2001*0.5^2001*0.5^3

=(4*0.5)^2001*0.5^3

=2^2001*0.5^3

=(2*0.5)^3*2^1998

=2^1998