(-10)^5 + (-10)^4 + (-10)^2
= (-100000) + (10000) + 100
= -99000 + 10000 + 100
= -98900 + 100
= -98800
(-10)^5 + (-10)^4 + (-10)^2
= (-100000) + (10000) + 100
= -99000 + 10000 + 100
= -98900 + 100
= -98800