Question

as raizes da funçao y=-x2+4X-3 SAO

Answer 1

-x² + 4x - 3 = 0

Δ = b² - 4.a.c
Δ = (4)² - 4.(-1).(-3)
Δ = 16 - 12
Δ = 4

x = -b +/- √Δ/2a
x = -4 +/- 2/-2
x' = 1
x'' = 3