Question

x²-6x+9=0 ajudem ai pfv

Answer 1

x² - 6x + 9 = 0

A= 1
B = - 6
C = 9

∆= b² - 4ac

∆= (-6)² - 4 . 1 . 9
∆= 36 - 36
∆= 0

x = - b ± √∆ / 2a

x = - (-6) ± √0 / 2 . 1
x = 6 ± 0 / 2

x' = 6 + 0/ 2 = 6/2 = 3
x'' = 6 - 0 / 2 = 6 / 2 = 3

S={ 3 }