# Python | sympy.cancel() method

With the help of `sympy.cancel()` method, we are able to any rational function and put it into a standard canonical form i.e `p/q`.

Syntax : `sympy.cancel()`
Return : Return the canonical expression of any rational function.

Example #1 :
In the given example, we can see that by using `sympy.cancel()` method, we can find the canonical form of any rational number i.e (p/q).

 `# import sympy ` `from` `sympy ``import` `*` `x, y, z ``=` `symbols(``'x y z'``) ` `gfg_exp ``=` `(x``*``*``2` `+` `2` `*` `x ``+` `1``)``/``(x``*``*``2` `+` `x) ` `  `  `# Using sympy.collect() method ` `gfg_exp ``=` `cancel(gfg_exp) ` `  `  `print``(gfg_exp) `

Output :

(x + 1)/x

Example #2 :

 `# import sympy ` `from` `sympy ``import` `*` `x, y, z ``=` `symbols(``'x y z'``) ` `gfg_exp ``=` `1` `/` `x ``+` `(``3` `*` `x ``/` `2` `-` `2``)``/``(x ``-` `4``) ` `  `  `# Using sympy.collect() method ` `gfg_exp ``=` `cancel(gfg_exp) ` `  `  `print``(gfg_exp) `

Output :

(3*x**2 – 2*x – 8)/(2*x**2 – 8*x)

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