Mathematics
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current location:Mathematical operation > History of Mathematical Computation
    2 × (7 × 4 + 7 × 5 + 4 × 5)
    2 × (9 × 4 + 9 × 5 + 4 × 5)
    -(3-2)^2+4
    -(-1-2)^2+4
    (10 + 18) × 12 ÷2 - 18 × 12 ÷ 2
    18 × 12 ÷ 2
    (10 + 18) × 12 ÷2
    14 × 6.8- 7.6 × 6.8 ÷ 2
    7.6*6.8/2
    14*6.8
    5x +10(10-x)=90
    0.5×0.125×0.8×0.2
    20000×0.03×15+40000×0.03×14+60000×0.03×13+80000×0.03×12+100000×0.03×11+120000×0.03×10+140000×0.03×9+160000×0.03×8+180000×0.03×7+200000×0.03×6
    3*cos(5*x)+3-8*e^(-x)=0
    3*cos(5*x)+3-8*e(-x)=0
    3*cos(5*x)+3-8*e-x=0
    2x^3-2x^2+1=0
    27-25x-23e^(-2x)-25xe^(-2x)=0
    X*0.89=112821.3
    x*0.89=112821.3

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