Question

( a + b + c )^2 =_ _ _ _ _ ​

Answer 1

Answer:

Step-by-step explanation:

Now we will learn to expand the square of a trinomial (a + b + c). Let (b + c) = x. Then (a + b + c)2 = (a + x)2 = a2 + 2ax + x2 = a2 + 2a (b + c) + (b + c)2 = a2 + 2ab ...

Answer 2

Answer:

it is a formula :

Step-by-step explanation:

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

friend this the formula