Question

Find the value of the polynomial 5x-4x^2+3 at x=-2

Answer 1

here is your answer

Answer 2

$by \: putting \: value \: of \: x \: in \:eqn \\ 5( - 2) - 4( { - 2}^{2} ) + 3 \\ = - 10 - 4(4) + 3 \\ = - 10 - 16 + 3 \\ = - 26 + 3 \\ = - 23$

Hope it will help you