Question

Equaçao de 2 grau bhaskara x2 -4x -5=0

Answer 1

x²-4x-5=0; x = [(-b) ± √(b²-4*a*C)]/2*a; a = 1; b = -4; C = -5; {[-(-4)]±√[(-4)²-4*1*(-5)]}/2*1; [4±√(16+20)]/2; [4±√(36)]/2; (4±6)/2; x1= 5; x2 = -1; S = {x E R | x1 = 5 e X2 = -1}; Att.: Euler.