Question

(iii) If a = 1, b = -2 and c = 3
Then find the value of a2 + b2 +c2 + ab + bc + ca.
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Answer 1

Answer:

1 +4+ 9 -2 -6 +3 = 17 - 8 = +9

Answer 2

Step-by-step explanation:

1²+ (-2)² +3²+1(-2)+(-2)3+3*1

1+(-4) +9+(-2)+6+3

-3+9+(-2)+6+3

-6+9+(-2)+6+3

2+(-2)+6+3

6+3

9

ans is 9

hope it helps u