Question

x(ao quadrado) - 6x + 9 = 0

Answer 1

x²-6x+9=0
a = 1
b=-6
c=9

Δ=b²-4ac
Δ=(-6)²-4·1·9
Δ=36-36
Δ=0

-b+-√Δ/2a
-(-6)+-0/2·1
x¹=6/2
x¹=3

x²=6/2
x²=3

Espero ter ajudado. (:

Answer 2

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 )