Question

x²-6x+9=0
calcule passo a passo pfv

Answer 1

A = 1 
B = -6
C =  9 


/\ =  b^{2} - 4.a.c
/\ =  -6^{2} - 4.1.9
/\ = 36 - 36
/\ = 0


x = -b+-√/\ ÷ 2.a

x= 6+-0 ÷ 2

x= 6/2 = 3