how can I see equation openly like (x+y)^2 = x^2+2xy+y^2

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If my equation is (x+y)^2 and I want see that as x^2+2xy+y^2 at the answer, which code should I use?
Or the real problem is my function is f(x) = x^2 and I want to learn f(2+3i). matlab shows it like f(2+3i)=(2+3i)^2 but I want to see -5+12i as answer. How?

Answers (1)

dileesh pv
dileesh pv on 14 Dec 2020
Try the command simplify; see a sample code below;
syms x y
simplify((1 - x^2)/(1 - x))


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