Question

find the value of polynomial 5 x minus 4 x square + 3 at x is equal to minus 1

Answer 1

the answer is
$- 6$

Answer 2

Answer:

$- 6$

Given,

$p{x} = 5x - {4x }^{2} + 3$

$x = - 1$

$p({ - 1} )= 5( - 1) - 4({ - 1})^{2} + 3$

$p( - 1) = - 5 - 4 + 3$

$p( - 1) = - 9 + 3$

$p( - 1) = - 6$