SOLUTION: Can you show me how to factor this please (4r^2-12r)+(9-s^2)

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Question 727643: Can you show me how to factor this please
(4r^2-12r)+(9-s^2)
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
(4r^2-12r)+(9-s^2)
4r(r-2)+(3+s)(3-s) ans.
OR:
(4R^2-12R+9)-S^2
(2R-3)(2R-3)-S^2
HOWEVER YOU CAN'T INCLUDE THE SQRT OF S IN THE () BECAUSE:
(2R-3-S)
(2R-3-S) MULTIPLY.
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4R^2-6R-2RS-6R+9-3S-2RS-3S+S^2
4R^2-12R+9-4RS-6S+S^2