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P(x)=2x3−x2−10x−6 p(-5)=?

1 Answer

May 6, 2018

$- 231$ $-231$

Explanation:

$P (x) = 2 x^{3} - x^{2} - 10 x - 6$ $P(x)=2x^3-x^2-10x-6$
Given: x= -5

$P (- 5) = 2 \cdot {(- 5)}^{3} - {(- 5)}^{2} - 10 \cdot (- 5) - 6$ $P(-5)=2*(-5)^3-(-5)^2-10*(-5)-6$

$P (- 5) = 2 \cdot (- 125) - (25) + 50 - 6$ $P(-5)=2*(-125)-(25)+50-6$

$P (- 5) = - 250 - 25 + 50 - 6$ $P(-5)=-250-25+50-6$

$P = - 231$ $P=-231$

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