Question 333047
You can't really "solve" it because you don't have the expression equal to anything.  You can, however, expand the expression using FOIL (first, outer, inner, last).
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See this site for details:
http://www.purplemath.com/modules/polymult2.htm
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(2c + 3d)(7c - 2d) 
(2c)(7c) + (2c)(-2d) + (3d)(7c) + (3d)(-2d)
(14c^2) + (-4cd) + (21cd) + (-6d^2)
14c^2 - 4cd + 21cd - 6d^2
14c^2 + 17cd - 6d^2
14c^2 - 6d^2 + 17cd