SOLUTION: evaluate the determinant -3 4 -8 -7

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Question 480501: evaluate the determinant
-3 4
-8 -7
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

%28matrix%282%2C2%2C-3%2C4%2C-8%2C-7%29%29 

matrix%282%2C2%2Ca%5B1%5D%2Cb%5B1%5D%2Ca%5B2%5D%2Cb%5B2%5D%29 = a%5B1%5Db%5B2%5D+-+b%5B1%5Da%5B2%5D = -3*-7 - (4*-8)= 53