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96smidge
Group Title
Given the system of equations, what is the value of the system determinant?
x + y = 8
x  y = 10
 one year ago
 one year ago
96smidge Group Title
Given the system of equations, what is the value of the system determinant? x + y = 8 x  y = 10
 one year ago
 one year ago

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

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

jedai17 Group TitleBest ResponseYou've already chosen the best response.0
a and c is the value of x and b and d is the value of y
 one year ago

jedai17 Group TitleBest ResponseYou've already chosen the best response.0
dw:1361514044728:dw
 one year ago

jedai17 Group TitleBest ResponseYou've already chosen the best response.0
then find the determinant according to the formula given by @fewscrewsmissing
 one year ago
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