How do you find the value of the expression when x=4 of #(x-3)/(x^2-7x+9)#?
1 Answer
Jul 4, 2017
Explanation:
#"to evaluate the expression"#
#"substitute x = 4 into the expression for all x terms"#
#rArr(x-3)/(x^2-7x+9)#
#=(color(red)(4)-3)/(color(red)(4)^2-(7xxcolor(red)(4))+9)#
#=1/(16-28+9)#
#=1/(-3)#
#=-1/3#
