How do you determine whether #36x^2-84x+49# is a perfect square trinomial?
1 Answer
May 27, 2017
Explanation:
#"note that " 36x^2=(6x)^2#
#"and " 49=7^2=(-7)^2#
#rArr36x^2-84x+49#
#=(6x-7)(6x-7)#
#=(6x-7)^2larrcolor(red)" a perfect square"#
