Question

resolva as equações 6x²-x-1=0

Answer 1

delta = b²-4ac   delta = (-1)²-(4.6.-1)    delta = 1 -(-24)    delta = 25

x = (-b+-²√delta)/2a     x = (1+-²√25)/2.6    x = (1+-5)/12

x = 6/12 = 1/2  e  x = -4/12 = -1/3