(-1/4)^2/(-1/2)^4*（-1）^4-（1又3/8+1又1/3-2又3/4）*24

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(-1/4)^2/(-1/2)^4*（-1）^4-（1又3/8+1又1/3-2又3/4）*24

(-1/4)^2/(-1/2)^4*（-1）^4-（1又3/8+1又1/3-2又3/4）*24
(-1/4)^2/(-1/2)^4*（-1）^4-（1又3/8+1又1/3-2又3/4）*24

(-1/4)^2/(-1/2)^4*（-1）^4-（1又3/8+1又1/3-2又3/4）*24
(-1/4)^2/(-1/2)^4*（-1）^4-（1又3/8+1又1/3-2又3/4）*24
=1/16÷1/16×1-（3/8+1/3-3/4）*24
=1-3/8×24-1/3×24+3/4×24
=1-9-8+18
=2

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