First time here? Check out the FAQ!
answered 10 years ago
This works perfectly:
sage: var('a,b,c,d') (a, b, c, d) sage: t = (a**2+b**2)*(c**2+d**2) sage: t (a^2 + b^2)*(c^2 + d^2) sage: expand(t) a^2*c^2 + b^2*c^2 + a^2*d^2 + b^2*d^2
Maybe you made a mistake in the parentheses ?