Question

1. Find the value of the polynomial 4 + x - x + 2x2 at
(1) x=0 (ii) x = 1 (iii) x=-2​

Answer 1

Answer:

(1) 8 (2) 9 (3) 8

MARK IT AS BRANLIEST

Answer 2

Step-by-step explanation:

$\: \: 4 + x - x + 2 {x}^{2} \\ 1. \: \: \: \: \: \: \: \: \: \: \: \: \: x = 0 \\ = > 4 + 0 - 0 + 2 \times 0 \\ = > 4 + 0 \\ = > 4 \\ 2. \: \: \: \: \: \: \: x = 1 \\ = > 4 + 1 - 1 + 2 \times 1 \\ = > 4 + 2 \\ = > 6 \\ 3. \: \: \: \: \: \: x = - 2 \\ = > 4 + ( - 2) - ( - 2) + 2 \times ( { - 2})^{2} \\ = > 4 - 2 + 2 + 2 \times 4 \\ = > 4 + 8 \\ = > 12$