how to multipy two polynomial expression?

hi i have to multiply two polynomial equations example:a=1+x+x^2 b=1+X output should be 1+2x+2x^2+x^3 plz do reply...

Answer 1

[Andrei Bobrov]

syms x
a=1+x+x^2
b=1+x
out = expand(a*b)

or

coeffa = [1 1 1];
coeffb = [1 1];
out = conv(coeffa,coeffb);

[Subhan Ullah]

Very helpful for me. Thanks buddy

[Vikas AsodariyAa]

it's helpful sir. Thank you

[Foysal Ahmmed]

Thank you very much Andrei Bovrov.