12. If a = 2, b = 1 and c = 3, find the value of: 3a2 - 5b + 2c2.
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Answer:
(3×2×2) -5 + 2×3×2
= 12 -5 +12
=7+12
=19
Step-by-step explanation:
1. put the value of abc first and next and last step is above
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