Name_________________________________________________ 						Date____________________

Evaluate the given determinant by expansion by minors.
									


	


									


	




Solve the following system of equations:

5) -3x+4y-z=3								
   x+ 2y-3z=9								
       y-5z=-1								



6) 2x+3y+5z=12
   4x+2y+4z=-2
   5x+4y+7z=7




Answers:


1)25									

2) -30

3)3									

4) -2

5)x=4									
  y=4									
  z=1									

6)x=-4
  y=5
  z=1



Unit 7 Outline