作业帮求解计算题巧算
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求解计算题巧算
求解计算题巧算
求解计算题巧算
原式=(1.2*1.2*1.2*2*4+2*2*2*2*4+1/13*1/13*1/13*2*4)/(1.2*1.2*1.2*3*9+2*2*2*3*9+1/13*1/13*1/13*3*9)
=8*(1.2*1.2*1.2+2*2*2+1/13*1/13*1/13)/27(1.2*1.2*1.2+2*2*2+1/13*1/13*1/13)
=8/27
很高兴为你解题,
1.2×2.4×4.8=1.2×1.2×1.2×2×4;
1.2×3.6×10.8=1.2×1.2×1.2×3×9;
2×4×8=2×2×2×2×4;
2×6×18=2×2×2×3×9;
(1/13)×(2/13)×(4/13)=(1/13)×(1/13)×(1/13)×2×4;
(1/13)×(3/13)×(9/13)=(1/13)×(1/13)×(1/1...
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1.2×2.4×4.8=1.2×1.2×1.2×2×4;
1.2×3.6×10.8=1.2×1.2×1.2×3×9;
2×4×8=2×2×2×2×4;
2×6×18=2×2×2×3×9;
(1/13)×(2/13)×(4/13)=(1/13)×(1/13)×(1/13)×2×4;
(1/13)×(3/13)×(9/13)=(1/13)×(1/13)×(1/13)×3×9;
所以原式=2×4×(1.2×1.2×1.2+2×2×2+(1/13)×(1/13)×(1/13))/(3×9×(1.2×1.2×1.2+2×2×2+(1/13)×(1/13)×(1/13)))
=2×4/(3×9)
=8/27;
您好，很高兴为您解答，skyhunter002为您答疑解惑
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