Question

funkcja f(x) = x kwadrat-9 przyjmuje dla argumentu : A= -9 B=-3 C=0 D=9

Answer 1

Answer 2

f(x) = x^2 - 9

 

a)

x = -9

f(-9) = (-9)^2 - 9 = 81-9 = 72

 

b)

x = -3

f(-3) = (-3)^2 - 9 = 9-9 = 0

 

c)

x = 0

f(0) = 0^2 - 9 = -9

 

d)

x = 9

f(9) = 9^2 - 9 = 81-9 = 72