Let Find p(-2).


We have,

p (x) = 3x3 + 4x2 – 5x + 8


So, p (-2) = 3 (-2)3 + 4 (-2)2 – 5 (-2) + 8


= 3 × -8 + 4 × 4 + 10 + 8


= - 24 + 16 + 10 + 8


= - 24 + 34


= 10


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