Question

a. (2; 0) e (2; - 3)
b. (2; 0) e ( - 0,5: - 3)
c. (1; 0) e (-1; - 3)
d. (2; 0) e ( - 1; - 3)
e. (1; 0) e ( - 0,5; - 3)​

Answer 1

Fazendo g(x)=f(x)

-x²+2x=x²-4

2x²-2x-4=0

x²-x-2=0

x'=[1+√(1+8)]/2=(1+3)/2=2 ==>y=x²-4=4-4=0  ==>(2,0)

x''=[1-√(1+8)]/2=(1-3)/2=-1 ==>y=x²-4=1-4 =-3  ==>(-1,-3)

d. (2; 0) e ( - 1; - 3)