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[ 1/1 Equation]
    Work: Find the solution of equation 440*440+790*790 = x*x .
    Question type: Equation
    Solution:Original question:

440

×

440

+

790

×

790

=

x

x

Left side of the equation =

193600

+

624100

=

817700

    The equation is transformed into :

817700

=

x

x

    After the equation is converted into a general formula, there is a common factor:
    ( x - √817700 )
    From
        x - √817700 = 0
    it is concluded that:：
        x₁=√817700
    Solutions that cannot be obtained by factorization:
        x₂≈-904.267659 , keep 6 decimal places    
    There are 2 solution(s).

解程的详细方法请参阅：《方程的解法》

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