-3+(-2又2分之1)²×(-25分之4)-丨-2²丨
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-3+(-2又2分之1)²×(-25分之4)-丨-2²丨
-3+(-2又2分之1)²×(-25分之4)-丨-2²丨
-3+(-2又2分之1)²×(-25分之4)-丨-2²丨
-3+(-2又2分之1)²×(-25分之4)-丨-2²丨
= -3 + 25/4 x (-4/25) - 4
= -3 -1 - 4
= -8
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解
-3+(-2又2分之1)²×(-25分之4)-丨-2²丨
=-3+(5/2)^2×(-4/25)-4
=-3+(25/4)×(-4/25)-4
=-3-1-4
=-8
=-3+(-5/2)^2*(-4/25)-丨-4丨
=-3+25/4*(-4/25)-4
=-3-25/4*4/25-4
=-3-1-4
=-8
=-3-1-4
=-8