C-05-Q115mediumsingle_mcqα,β\alpha, \betaα,β মূল হলে α2β+αβ2=?\alpha^2 \beta + \alpha \beta^2 = ?α2β+αβ2=?aαβ(α+β)\alpha \beta (\alpha + \beta)αβ(α+β)b(α+β)2(\alpha + \beta)^2(α+β)