Answered

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Evaluate the following expression using the values given:

Find -3a2 - b3 + 3c2 - 2b3 if a = 2, b = -1, and c = 3.

Sagot :

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-3(2^2) - 3(-1) + 3(3^2) - 2(-1^3)
-3(4) - 3(-1) + 3(9) - 2(-1)
-12 + 3 + 27 + 2
-9 + 27 + 2
18 + 2
20
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