Is 4x^2 + 28x + 49 a perfect square trinomial and how do you factor it?

[ad_1]

Yes it is.

##4x^2+28x+49 = (2x+7)^2##

All absolute clear trinomials are of the form:

##a^2+-2ab+b^2 = (a+-b)^2##

In this plight ##a = 2x## and ##b=7## ...

##4x^2+28x+49##

##=(2x)^2+(2*(2x)*7)+7^2##

##=(2x+7)^2##

Show past

[ad_2]
Source concatenate