Wie rechnen Sie mit # x ^ 2- 6x + 8 #?

#"consider the factors of + 8 which sum to give the"#
#"coefficient of the x-term, that is - 6"#

#"the factors of + 8 which sum to - 6 are - 4 and - 2"#

#rArrx^2-6x+8=(x-4)(x-2)#