Question

determine o polinômio

p(x)=(x=2).(x-1)(3x+2).(x+4)+x^2-5x

Answer 1

$p(x)=(x+2)(x-1)+(3x+2)(x+4)+x^2-5x\\\\p(x)=x^2-x+2x-2+3x^2+12x+2x+8+x^2-5x\\\\p(x)=(x^2+3x^2+x^2)+(-x+2x+12x+2x-5x)+(-2+8)\\\\\boxed{p(x)=5x^2+10x+6}$