1.

Let a.b ,gt 0 and Delta=|{:(,-x,a,b),(,b,-x,a),(,a,b,-x):}|, then

Answer»

a+B-x is a FACTOR of `Delta`
`x^(2)+(a+b)x+a^(2)+b^(2)-AB"is a factor of "Delta`
`Delta=0` has THREE real roots if `a=b`
a+b+x is a factor of `Delta`

Answer :A::B::C


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