Factor the polynomial. 4f^2 - 36f + 81

Holt McDougal Larson Algebra 1 Common Core Edition page 545 number 16

Asked by Dee Dee on 25 Mar 10:56

Last updated by anonymous on 26 Mar 01:07

Answered by CherieS on 26 Mar 01:07

=4f^2 - 36f + 81

=4f^2

=(2f ) (2f ) ( +9)( +9)

=(2f+9)(2f+9)= (2f)(2f)+(2f)(9)+(9)(2f)+(9)(9)

=4f^2+18f+18f+81

=4f^2+36f+81

therefore =(2f+9)^2