Question

1. Dada a função f(x)=x°-9x+14. determine:

a) f(-3)
b)f(0)
c)f(7)​

Answer 1

f(x)=x²-9x+14

f(-3)=(-3)²- 9.(-3) + 14

f(-3)=9+27+ 14

f(-3)=50

f(x)=x²-9x+14

f(0)=0²-9.0+14

f(0)=14

f(x)=x²-9x+14

f(7)=7²-9.7+14

f(7)=49-63+14

f(7)=-14+14

f(7)=0