College Algebra: One Step at a Time.  Pages 26-30:  7, 9

Dr. Robert J. Rapalje

Seminole Community College

Sanford, FL  32773

p. 25.  # 7.       

This is a  F OI L problem! 

Multiply  the FIRST times FIRST, which gives you .

The  OUTER times OUTER  is  , and the INNER times INNER is  , which combine together to give you

Finally, the LAST times LAST is  , which is −12.

The Final Answer is

p. 25.  # 9.       

This is another F OI L problem! 

Multiply  the FIRST times FIRST, which gives you .

The  OUTER times OUTER  is  , and the INNER times INNER is  , which combine together to give you

Finally, the LAST times LAST is  , which is +42.

The Final Answer is

  Return to main page     Return to College Algebra      Math in Living C O L O R !!