Question

Ajudaa !!

a) x² - x - 6 = 0

b) 3x² - 2x - 65 = 0

Answer 1

x² - x - 6 = 0
delta = 1 + 24 = 25 ou +-V25 = +-5 *****

x = ( 1 +-5)/2
x1 = 6/2 = 3***
x2 = -4/2 = -2 ***

b
3x² - 2x - 65 = 0
delta = 4 + 780 = 784 ou +- V784 =  +-28 ****

x = ( 2 +-28)/6
x1 =  30/6 = 5 ****
x2 = -26/6 = -13/3 ***