Question

(a+b)⁴ = pake caranya yaaaa

Answer 1

(a+b)(a+b) = a^2 + 2ab + b^2 -> ini masih pangkat 2
(a^2 + 2ab + 2b^2)^2 = a^4 + 2a^3b + a^2b^2 + 2a^3b + 4a^2b^2  + 2ab^3 + a^2b^2 + 2ab^3 + b^4 = a^4 + 4a^3b + 6a^2b^2 + 4ab^3 + b^4