AmTran_Bus one year ago Help with determinate

1. AmTran_Bus

2. AmTran_Bus

I get 0. Here is my work. They say it is 5.

3. anonymous

Check your first determinant.

4. AmTran_Bus

2*0 is zero.

5. AmTran_Bus

gurr

6. anonymous

Same problem with the third one.

7. anonymous

And there's also an error with the second one...

8. AmTran_Bus

How? -1 - 4 is -5. Multiply that by -1 and you get 5.

9. anonymous

$\begin{vmatrix}3&2\\0&1\end{vmatrix}=3-0$$\begin{vmatrix}-1&2\\2&1\end{vmatrix}=-1-4$$\begin{vmatrix}-1&3\\2&0\end{vmatrix}=0-6$

10. anonymous

Oh I see, you distributed $$-1$$ already. Never mind about the second one.

11. AmTran_Bus

Okie dokie. its 5

12. AmTran_Bus

@SithsAndGiggles Ummm. So what did you get?

13. AmTran_Bus

Is it -5 or 5?

14. anonymous

Same as you, it's positive.