SOLUTION: factor each completely 3r^2-4r-15 7x^2-79x+90 5x^2-28x+15 5n^2+9n+4 7b^2-32b-60

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Question 643214: factor each completely
3r^2-4r-15
7x^2-79x+90
5x^2-28x+15
5n^2+9n+4
7b^2-32b-60
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
(1) (3r+5)(r-3)
(2) (7x-9)(x-10)
(3) (5x-3)(x-5)
(4) (n+1)(5n+4)
(5) (7b+10)(b-6)