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54 - 4a^2 3b^3 when a = -2 and b = 4?
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54 - 4a^2 3b^3 when a = -2 and b = 4?

User Sumitk
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54 - 4a^2 + 3b^3 when a = -2 and b = 4 is 54 - 4(-2)^2 + 3(4)^3 = 54 - 4(4) + 3(64) = 54 - 16 + 192 = 230
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