Question

Write the formula of a +b+c square

Answer 1

Answer:

a square + b square + c square + 2(ab+bc+ca)

Step-by-step explanation:

Answer 2

Answer:

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