(-2)^6
(-2)6 = (-2)(-2)(-2)(-2)(-2)(-2)
= 4(-2)(-2)(-2)(-2)
= -8(-2)(-2)(-2)
= 16(-2)(-2)
= -32(-2)
= 64
(negative) x (negative) = positive
(negative) x (positive) = negative