Find the determinant of the matrix A= ( begin{bmatrix}1&x&y 1&x&-y 1&-x^2&y^2 end{bmatrix} ).

Find the determinant of the matrix A= ( begin{bmatrix}1&x&y 1&x&-y 1

1.	Find the determinant of the matrix A= ( begin{bmatrix}1&x&y 1&x&-y 1&-x^2&y^2 end{bmatrix} ).
A.	(x+1)
B.	-2xy(x+1)
C.	xy(x+1)
D.	2xy(x+1)
Answer» C. xy(x+1)

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