2а 2b b - c 2b 2а а+c| %3D-2(а — b)?(а + b) а +b a+ b а

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.5: Determinants
Problem 7SC: Use Cramers rule to solve 2x-y+2z=6x-y+z=2x+y+2z=9.
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prove that the following determinant is true using theorems of determinants. 

2а
2b
b - c
2b
- 2(а - b)? (а + b)
2а
a + c =
la + b a + b
а
Transcribed Image Text:2а 2b b - c 2b - 2(а - b)? (а + b) 2а a + c = la + b a + b а
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