Question

using properties of determinant, prove that
(there are five questions. q.no 5 couldn't fit in, so I sent pic of q.no 4& 5, please help)

1.

1 x+y x²+y²
1 y+z y²+z² = (x-y)(y-z)(z-x)
1 z+y z²+x²

2.

a+b b+c c+a a b c
b+a c+a a+b = 2 b c a
c+a a+b b+c c a b

3.

b²+c² b² c²
a² c²+a² c² = 4a²b²c²
a² b² a²+b²

4.

a+b+c a b
c b+c+2a b = 2(a+b+c)³
c a c+a+2b
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Answer 1

Answer:

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