# Python | sympy.expand() method

• Last Updated : 12 Jun, 2019

With the help of `sympy.expand()` method, we can expand the mathematical expressions in the form of variables by using `sympy.expand()` method.

Syntax : `sympy.expand(expression)`
Return : Return mathematical expression.

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Example #1 :
In this example we can see that by using `sympy.expand()` method, we can get the mathematical expression with variables. Here we use `symbols()` method also to declare a variable as symbol.

 `# import sympy``from` `sympy ``import` `expand, symbols`` ` `x, y ``=` `symbols(``'x y'``)``gfg_exp ``=` `x ``+` `y`` ` `# Use sympy.expand() method``exp ``=` `sympy.expand(gfg_exp``*``*``2``)`` ` `print``(exp)`

Output :

x**2 + 2*x*y + y**2

Example #2 :

 `# import sympy``from` `sympy ``import` `expand, symbols`` ` `x, y, z ``=` `symbols(``'x y z'``)``gfg_exp ``=` `x ``+` `y ``+` `z`` ` `# Use sympy.expand() method``exp ``=` `sympy.expand(gfg_exp``*``*``2``)`` ` `print``(exp)`

Output :

x**2 + 2*x*y + 2*x*z + y**2 + 2*y*z + z**2

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