Question

Resolva a equaçao de -x²+5x-6=0

Answer 1

Δ = b2 - 4.a.c 
Δ = 52 - 4 . -1 . -6 
Δ = 25 - 4. -1 . -6 
Δ = 1
x = (-b +- √Δ)/2a
x' = (-5 + √1)/2.-1
x' = -4 / -2
x' = 2

x'' = (-5 - √1)/2.-1
x'' = -6 / -2
x'' = 3