-1的4次幂-(1-0.5)的2次幂×1∕3×[2-(-3)的2次幂]
=-1-(1/2)²×(1/3)×(2-9)
=-1-(1/4)×(1/3)×(-7)
=-1+7/12
=-5/12;
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-1的4次幂-(1-0.5)的2次幂×1∕3×[2-(-3)的2次幂]
=-1-(1/2)²×(1/3)×(2-9)
=-1-(1/4)×(1/3)×(-7)
=-1+7/12
=-5/12;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,