Question

determine os zeros da funçao quadrática

a) f(x)=x²-4x+3

b) f(x)=-2x²+8x-6

c) f(x)=-x²-5x

d) f(x)=1/3x2-10/3x+5

Answer 1

a) x’=1 , x”=3
b) x’=1 , x”=3
c) x’=-5 , x”=0
d) x’=5-√10 , x”=5+ √10