Question

Dada a função f(x)=x²- 5x - 4 determine f(2):

Answer 1

f(x)=x²- 5x - 4

f(2)=2²- 5.2 - 4 = 4 -10 -4 = -10 ✓

Answer 2

f(x)= x² - 5x - 4

f(2)

f(2)= 2² - 5 • 2 - 4

f(2)= 4 - 10 - 4

f(2)= - 6 - 4

f(2)= - 10