Question

数学计算

①2/1×7.3²-7.3×2.3+1/2×2.3²②44×29-11×3^4

Answer 1

1.原式=1/2（7.3-2.3）²=25/2
2.原式=11*（4*29-81）=35*11=35*（10+1）=385

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Answer 2

（1）1/2×7.3²-7.3×2.3+1/2×2.3²=1/2(7.3²-2×7.3×2.3+2.3²)=1/2(7.3-2.3)^2=25/2
(2)44×29-11×3^4=11×4×29-11×3^4=11(116-81)=11×35=385

Answer 3

① 1/2×7.3²-7.3×2.3+1/2×2.3²=1/2(7.3²-2×7.3×2.3+2.3²)=1/2(7.3-2.3)^2=25/2
② 44×29-11×3^4=1276-891=385
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Answer 4

1.原式=1/2（7.3-2.3）²=25/2
2.原式=11*（4*29-81）=35*11=35*（10+1）=385
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Answer 5

（1）1/2×7.3²-7.3×2.3+1/2×2.3²=1/2(7.3²-2×7.3×2.3+2.3²)=1/2(7.3-2.3)^2=25/2
(2)44×29-11×3^4=11×4×29-11×3^4=11(116-81)=11×35=385

Answer 6

164.11和385