① (-2)^2003 *(-0.5)^2004
= (-2)^2003 *(-0.5)^2003 * (-0.5)
= [(-2) * (-0.5)]^2003 * (-0.5)
= 1^2003 * (-0.5)
= -0.5
② (-2)^100+(-2)^101
= (-2)^100+(-2)^100 * (-2)
= (-2)^100 * [1+(-2)]
= - 2^100
① (-2)^2003 *(-0.5)^2004
= (-2)^2003 *(-0.5)^2003 * (-0.5)
= [(-2) * (-0.5)]^2003 * (-0.5)
= 1^2003 * (-0.5)
= -0.5
② (-2)^100+(-2)^101
= (-2)^100+(-2)^100 * (-2)
= (-2)^100 * [1+(-2)]
= - 2^100