1.) for P(x)=3x^3 + 6x^2 - 5x + 4 determine P(-1)
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to find P(-1), all you do is plug -1 in for all the x's in the equation. Thus:
P(-1) = 3(-1)^3 + 6(-1)^2 - 5(-1) + 4
P(-1) = 3(-1) + 6(1) -5(-1) + 4
P(-1) = -3 + 6 + 5 + 4
P(-1) = 3 + 9 = 12
hope this helps :)
P(-1) = 3(-1)^3 + 6(-1)^2 - 5(-1) + 4
P(-1) = 3(-1) + 6(1) -5(-1) + 4
P(-1) = -3 + 6 + 5 + 4
P(-1) = 3 + 9 = 12
hope this helps :)