Question

Calcule as raízes (x' e x'')
A-F (x) -x^2-5x+6
Delta= b^2-4.a.c valor de delta (2)2-4. (+4). (+1)

B-F (x)=+x^2 5x+4
Delta= b^2-4.a.c valor de delta: (-5)^2-4. (+1). (+5)

Esse ^= e o 2 elevado

Answer 1

Boa tarde

a)

-x² - 5x + 6 = 0

d² = 25 + 24 = 49

d = 7

x1 = (5 + 7)/-2 = -6

x2 = (5 - 7)/-2 = 1

b)

x² + 5x + 4

d² = 25 - 16 = 9

d = 3

x1 = (-5 + 3)/2 = -1

x2 = (-5 - 3)/2 = -4