-1²×(-3)²-(-2分之1)²ºº³×(-2)²ºº²÷9分之2

问题描述:

-1²×(-3)²-(-2分之1)²ºº³×(-2)²ºº²÷9分之2


原式
=-1×9-[(-1/2)×(-2)]^2002×(-1/2)÷(2/9)
=-9-1×(-1/2)×(9/2)
=-9+9/4
=-27/4