Question

x²+4x+3=0???? obs: usando a fórmula de baskara

Answer 1

Delta= 16-4*1*3
Delta= 4
X= -(4) +- (raiz de 4)/2*1
X= -4 +- 2/2
X= -1 ou -3

Answer 2

x² + 4x + 3 = 0
a = 1; b = 4; c = 3
Δ = b² - 4ac
Δ = 4² - 4.1.3
Δ = 16 - 12
Δ = 4

x = - b +/- √Δ   =  -  4 +/- √4
      --------------     -----------------
             2a                  2.1

x = - 4 + 2    = - 4/2 = - 2
      -----------
           2

x = - 4 - 2  = - 6/2 = - 3
      ---------
           2

R.: x = - 2; x = - 3