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96smidge
 3 years ago
Given the system of equations, what is the value of the system determinant?
x + y = 8
x  y = 10
96smidge
 3 years ago
Given the system of equations, what is the value of the system determinant? x + y = 8 x  y = 10

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fewscrewsmissing
 3 years ago
Best ResponseYou've already chosen the best response.0To find the determinant of a 2x2 matrix: \[A = \left[\begin{matrix}a & b \\ c & d\end{matrix}\right]\\ A=det(A)=adcb\]

fewscrewsmissing
 3 years ago
Best ResponseYou've already chosen the best response.0I'd actually forgotten how to do this since it's been so long, and it literally took a 2 second Google search ;)

jedai17
 2 years ago
Best ResponseYou've already chosen the best response.0a and c is the value of x and b and d is the value of y

jedai17
 2 years ago
Best ResponseYou've already chosen the best response.0then find the determinant according to the formula given by @fewscrewsmissing
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