Evaluate; please answer fast
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3
Answer:
-7
Step-by-step explanation:
(see image)
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1
Step-by-step explanation:
= (1)² + (-2)² + (3)² - (3×1×-2) - (3×-2×3) - (3×1×3) + (6×1×-2×3)
= 1+4+9+6+18-9-36
= 38-45
= -7
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