Question

How can we expand (a+2b+c)²

Answer 1

Answer:

a^2+4b^2+c^2+4ab+4bc+2ac is the answer

the general formula for this is

(a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca

Answer 2

Step-by-step explanation:

Here is your answer~

(a^2+4b^2+c^2).2(a+2b+c)