How do you factor: #y= x^2 -6x + 9 #?

1 Answer
Dec 17, 2015

Answer:

#color(white)(xx)y=(x-3)^2#

Explanation:

#color(white)(xx)y=x^2-6x+9#
#color(white)(xx)=(x-3)^2#

Further explanation (via حكيم ا. and
Tony B ):

#color(white)(xx)Delta=36-4xx9#
#color(white)(xxx)=0#

#=>x_(1, 2)=-b/(2a)#
#color(white)(xxxxx)=6/2#
#color(white)(xxxxx)=3#
graph{(x-3)^2 [-10, 10, -5, 5]}