KCET 2017 Math Solved Paper

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Question : 26 of 60

Marks: +1, -0

Let △=|

Ax	x2	1
By	y2	1
Cz	z2	1

| and
△1=|

A	B	C
x	y	z
zy	zx	xy

| then

△1 = -△
△1 = △
△1 ≠ △
△1 = 2△

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