Question

p(x)=-2x^3+4x^2-x+3 para x=2​

Answer 1

$2 {x}^{3} + 4 {x}^{2} - x + 3 = \\ 2 \times {2}^{3} + 4 \times {2}^{2} - 2 + 3 = \\ 2 \times 8 + 4 \times 4 - 2 + 3 = \\ 16 + 16 - 2 + 3 = \\ 32 - 2 + 3 = \\ 30 + 3= \\ 33$