Question

fie f:R->R,f(x)= x la a doua-3x+2. Calculati produsul f(-2)xf(-1)xf(0)xf(1)xf(2).
Multumesc frumos!

Answer 1

$\it f(x)=x^2-3x+2 =x^2-x-2x+2=x(x-1)-2(x-1)=(x-1)(x-2)\Rightarrow\\ \\ f(1)=f(2)=0 \Rightarrow produsul\ din\ enun\c{\it t}\ este\ egal\ cu\ 0.$