Question

5. Dada a função f(x) = x2
– x, calcule f(2) + 3.f(- 2) – 5.f(4) + f(1)

Answer 1

f(x) = x²– x
2²-2+3.(-2)²-(-2)-5.4²-4+1²-1
4-2+3.4+2-5.16-4+1-1
2+12+2-80-4+0
16-80-4
-64-4=-68