Question

（-10）^2n=____ ；（-10）^2n+1=____；

Answer 1

（-10）^2n =10^2n (-10)^2n+1 =-(10^2n+1) （-2）^2003 + （-2）^2002 =（-2）^2002 X (-2+1) = -(2^2002) (-0.25)^2009 X 4^2004 = (-1/4)^2009 X 4^2004 = (-1/4)^5(-1/4)^2004 X 4^2004 =(-1/4)^5 X 1 = (-1/4)^5 配对乘 .