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    Work: Find the solution of equation x3+3x2－9x－27 = 0 .
    Question type: Equation
    Solution:Original question:

x

×

3

+

3

x

×

2

−

9

x

−

27

=

0

Left side of the equation =

x

×

3

+

6

x

−

9

x

−

27

=

0

x

−

27

    The equation is transformed into :

0

x

−

27

=

0

    Transposition :

=

0

+

27

    The equation entered is incorrect, Please check it before entering.

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