Question

Fórmula Bhaskara. x2-6x+9=0

Answer 1

-b - /b² -4 .a.c
-(-6)-/6² -4 .2 .9
6 - /36 -72
6 -(-36)
6 + 36
42x

Answer 2

x² - 6x +9 = 0
a = 1   b = -6  c = 9
Δ= b² - 4.a.c
Δ=+ 36 - 36
Δ= 0
x = -b +- √Δ
         2a
x = 6
      2

x= 3.