已知|2a+1|+√(b-1)=0,则-a^2-b^100
|2a+1|+√(b-1)=0,则
2a+1=0
b-1=0
a=-1/2
b=1
所以
-a^2-b^100
=-(-1/2)^2-1^100
=-1/4-1
=-5/4