Question

 If p(x) = 3x³+4x²-5x+8 ,then p(-3) =? * -22 -32 32 22​

Answer 1

$p(x) = 3x³+4x²-5x+8$

$p( - 3) = 3( - 3)³+4( - 3)²-5 (- 3)+8$

$p( - 3) = 3( - 27)+4( 9)-5 (- 3)+8$

$p( - 3) = - 81+36 + 15 +8$

$p( - 3) = - 81+59$

$\orange{ \therefore p( - 3) = - 22}$