Question

11) Dada a função f(x) = x2 – 20, determine o valor de:
a) f(1)
b) f(-2)
c) f(4)
d) f(-20)
e) f(7)
f)f(-10)
g) f(40)​

Answer 1

Explicação passo-a-passo:

f(x)=x2-20

f(1)=1^2-20

f(1)=-19

f(x)=x2-20

f(-2)=(-2)^2-20

f(-2)=4-20

f(-2)=-16

f(x)=x2-20

f(4)=4^2-20

f(4)=16-20

f(4)=-4

f(x)=x2-20

f(-20)=(-20)^2-20

f(-20)=400-20

f(-20)=380

f(x)=x2-20

f(7)=7^2-20

f(7)=49-20

f(7)=29

f(x)=x2-20

f(-10)=(-10)^2-20

f(-10)=100-20

f(-10)=80

f(x)=x2-20

f(40)=40^2-20

f(40)=1600-20

f(40)= 1580