Factor the polynomial completely. 3r^5 + 3r^4 - 90r^3

Holt McDougal Larson Algebra 1 Common Core Edition page 552 number 34

Asked by Dee Dee on 26 Mar 10:01

Last updated by anonymous on 27 Mar 12:42

Answered by CherieS on 27 Mar 12:42

3r^5 + 3r^4 - 90r^3

3r^3 (r^2+r-30)

3r^3 (r )(r ) ( -5)( +6)

3r^3 (r-5)(r+6)

Factor:

3r^3 (r-5)(r+6)

Check:

3r^3 (r-5)(r+6)

3r^3 (r)(r) (r)(+6) (-5)(r) (-5)(+6)

3r^3 r^2 +6r -5r -30

3r^3(r^2+r-30)