Question

What is the value of ab +bc+ca-a2-b2-c2 when a=2,b=3and c=(-3)?
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Answer 1

Step-by-step explanation:

$2 \times 3 + 3( - 3) + ( - 3) \times 2 - 2 \times 2 - 3 \times 2 - ( - 3) \times 2$

=6-9-6-4-6+6

=-12

Answer 2

Answer:

6+-9+-6-4-6+6

Step-by-step explanation:

a=2 b=3c=-3 so 2×3+3×-3-2×2-3×2+3×2