MODERATE EXERCISES-Symbol Manipulation



(2) Expand each product.

 (a) (2x - 5)(x2 - x - 1)

 (b) (x2 - (sqrt(2))(x) + 1 )(x2 + (sqrt(2))(x) + 1 )

 
HINT:
 
 Perform the "FOIL" method of factoring and then group common terms together
 to simplify.


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