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current location:Solving equations online > On line Solution of Monovariate Equation > The history of univariate equation calculation
    arctan(x÷5)+arctan(2x÷(10-x*x))=90
    384k^2+440k-384=0
    x+55x/48-1=0
    arctan(x)+arctan(x÷5)=90
    39x^2-2x-369=0
    11.9*300/2*x*x-11.9*300*655*x+353670000=0
    11.9*300/2*x*x-11.9*300*655*x+3536700=0
    11.9/2*x*x-11.9*655x+3536700=0
    400(x+1)^2=576
    X²-X-1
    2X+3=X^2-X-1
    Arctan(tanπ/4)
    Arctan(√2tanπ/4)
    490x^2+113x+6.4=0
    2450x^2+565x-32=0
    2450x^2+565x+32=0
    0.84x×1.15=1.25x-142
    0.85x×1.15=1.25x-142
    2450*x*x-565*x+32=0
    2450x*x-565*x+32=0

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