Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 3-3 8 8 5 3 5 8-5 Write the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below. A. Using this expansion, the determinant is (3)(-49)-(-3)(-55) + (8)(39). OB. Using this expansion, the determinant is (3)(-49) + (-3)(-55) + (8)(39). OC. Using this expansion, the determinant is (3)(-1)+(-3)(79) + (8)(89). OD. Using this expansion, the determinant is (3)(-1)-(-3)(79) + (8)(89). Write the expression for the determinant using a cofactor expansion down the second column. Choose the correct answer below. A. Using this expansion, the determinant is (-3)(-25)+(5)(25) + (8)(73). OB. Using this expansion, the determinant is (-3)(-55) + (5)(-55) + (8)(-55). O C. Using this expansion, the determinant is -(-3)(-25)+(5)(25) - (8)(73). D. Using this expansion, the determinant is -(-3)(-55)+(5)(-55) - (8)(-55). The determinant is (Simplify your answer.)

Intermediate Algebra
19th Edition
ISBN:9780998625720
Author:Lynn Marecek
Publisher:Lynn Marecek
Chapter4: Systems Of Linear Equations
Section4.6: Solve Systems Of Equations Using Determinants
Problem 4.94TI: Evaluate the determinant |322214103| , by expanding by minors along the first row.
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Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column.
3-3
8
8
5 3
5
8-5
Write the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below.
A. Using this expansion, the determinant is (3)(-49)-(-3)(-55) + (8)(39).
OB. Using this expansion, the determinant is (3)(-49) + (-3)(-55) + (8)(39).
OC. Using this expansion, the determinant is (3)(-1)+(-3)(79) + (8)(89).
OD. Using this expansion, the determinant is (3)(-1)-(-3)(79) + (8)(89).
Write the expression for the determinant using a cofactor expansion down the second column. Choose the correct answer below.
A. Using this expansion, the determinant is (-3)(-25)+(5)(25) + (8)(73).
OB. Using this expansion, the determinant is (-3)(-55) + (5)(-55) + (8)(-55).
O C. Using this expansion, the determinant is -(-3)(-25)+(5)(25) - (8)(73).
D. Using this expansion, the determinant is -(-3)(-55)+(5)(-55) - (8)(-55).
The determinant is
(Simplify your answer.)
Transcribed Image Text:Compute the determinant using a cofactor expansion across the first row. Also compute the determinant by a cofactor expansion down the second column. 3-3 8 8 5 3 5 8-5 Write the expression for the determinant using a cofactor expansion across the first row. Choose the correct answer below. A. Using this expansion, the determinant is (3)(-49)-(-3)(-55) + (8)(39). OB. Using this expansion, the determinant is (3)(-49) + (-3)(-55) + (8)(39). OC. Using this expansion, the determinant is (3)(-1)+(-3)(79) + (8)(89). OD. Using this expansion, the determinant is (3)(-1)-(-3)(79) + (8)(89). Write the expression for the determinant using a cofactor expansion down the second column. Choose the correct answer below. A. Using this expansion, the determinant is (-3)(-25)+(5)(25) + (8)(73). OB. Using this expansion, the determinant is (-3)(-55) + (5)(-55) + (8)(-55). O C. Using this expansion, the determinant is -(-3)(-25)+(5)(25) - (8)(73). D. Using this expansion, the determinant is -(-3)(-55)+(5)(-55) - (8)(-55). The determinant is (Simplify your answer.)
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