Question

dada a funçao f:R  R definida por f(x)=x2- 3x+2 o valor de f(3)+f(-1) ??? calculo completoo  por favor 

Answer 1

f(3)=3²-3*3+2
f(3)= 9-9+2
f(3)= 2

f(-1)=(-1)²-3*(-1)+2
f(-1)= 1+3+2
f(-1)= 6

f(3)+f(-1)= 2+6= 8

Answer 2

f(3+(-1)=x2-3x+2 f(2)=2.2-3x2+2 =4-6+2 =4-8 =-4