Question

find the value of the polynomial p(x) =
$5 {x}^{3} - 3 {x}^{2} + 7x - 3$
at x = 2, -2, √2​

Answer 1

Given: $5x^{3} - 3x^{2} + 7x - 3$

To find: p(x) at $x=2, -2, \sqrt{2}$

Solution:

$p(2) = 5(2)^{3} - 3(2)^{2} + 7(2) - 3$

       $= 40 - 12 + 14 -3$

       $=39$