如何在 Python 中计算二次方程

Question

I want to do some simple calculation with variables. But this x is not variable on often seen in programs, but x = unknown in math formula.

I want calculate this

(x-1)^2 =

and get

x^2 - 4x + 4

is it possible??

I am familiar with some program language, but its first time to use math purpose.

Answer 1

As per Chen Guevara's comment here is a tiny snippet of sympy -using code to illustrate.

from sympy import symbols, expand

x = symbols('x')
expr = (x-1)**2
print(expr)
expr2 = expand(expr)
print(expr2)

This produces the output:

(x - 1)**2
x**2 - 2*x + 1

Answer 2

x = 8

quadratic = ((x ** 2) - (4 * x)) + 4
print(quadratic)

returns 36. is this what youre looking for?