SOLUTION: multiply in the vertical method (2r

SOLUTION: multiply in the vertical method (2r - 3s) (4r�+ 6rs +9s�)

Question 94302: multiply in the vertical method
(2r - 3s) (4r�+ 6rs +9s�)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Vertical is no different than horizontal; in either case you must
multiply each term of one of the factors by each term of the other factor:
then simplify the results.
------------multiply in the vertical method
(2r - 3s) (4r�+ 6rs +9s�)
= (2r)(4r�+ 6rs +9s�) -3s(4r�+ 6rs +9s�)
= 8r^3+12r^2s+18rs^2-12r^2s-18rs^2-27s^3
= 8r^3-6rs^2+6rs^2-27s^3
==============
Cheers,
Stan H.
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