OpenStudy (brittany):

Is this a trinomial square? 4r^2+4r+1

6 years ago
OpenStudy (saifoo.khan):

Yes!

6 years ago
OpenStudy (jim_thompson5910):

\[4r^2+4r+1\] \[4r^2+2r+2r+1\] \[2r(2r+1)+1(2r+1)\] \[(2r+1)(2r+1)\] \[(2r+1)^2\] So because \[4r^2+4r+1=(2r+1)^2\] this is a perfect square trinomial.

6 years ago
OpenStudy (anonymous):

\[(2r + 1)^2\]

6 years ago
OpenStudy (anonymous):

Good Job Jim : )

6 years ago
OpenStudy (anonymous):

Jim owns math

6 years ago