Question

resolva a a equação n2-n-6=0​

Answer 1

n²-n-6=0​

a = 1  ;  b = -1   e c= -6

delta= b² -4ac

delta = (-1)² - 4 * 1 * (-6)

delta = 1 + 24  = 25

x= -b +-√Δ/2a

x = - (-1)±√25/2*(1)

x =(  1+-5)/2

x1 =( 1+5)/2 = 6/2 = 3

x2 = (1-5)/2  = -4/2 = -2