compute sum of polynomial square

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RICCARDO
RICCARDO 2024-8-3
移动：Matt J 2024-8-4
Can I solve sum of polynomial square in a one variable ?
e.g. (1+x)^2 + (3+x)^2 +2*x =
Can Mathlab compute result as x variable ?
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Walter Roberson
Walter Roberson 2024-8-3
Ran in:
syms x
eqn = (1+x)^2 + (3+x)^2 +2*x
eqn = 
solx = solve(eqn, x)
solx = 
RICCARDO
RICCARDO 2024-8-3
编辑：RICCARDO 2024-8-3
result shuld be : (1+2x+x^2) + (9+6x +x^2) + 2x
that is finally : 2x^2 + 10x + 10
This is a simple expression expansion
I'd like to plot it too
thanks

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Walter Roberson
Walter Roberson 2024-8-3
移动：Matt J 2024-8-4
Ran in:
syms x
eqn = (1+x)^2 + (3+x)^2 +2*x
eqn = 
expand(eqn)
ans = 

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