Question

x2-6x+9=0 como resolver

Answer 1

$2x - 6x + 9 = 0 \\ - 4x = - 9 \\ x = 2.25$

Answer 2

X²-6x+9 = 0

A = 1

B = -6

C = 9

∆ = b² -4.a.c

∆ = (-6)²-4.1.9

∆ = 36 - 36

∆ = 0

X = -(-6)±√∆ / 2.a

X = 6 ±√0 / 2


X1 = 6/2

X1 = 3

S= {3}