Question

respectively.
5. If a? + b2 + c =12 and ab + bc + ca = - 4, Find the value of ( a + b + c)2.

Answer 1

4

Step-by-step explanation:

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

and apply the above things as 12+_4*2...which gives 4