1.

Let Delta=|(Ax,x^(2),1),(By,y^(2),1),(Cz,z^(2),1)| and Delta_(1)=|(A,B,C),(x,y,z),(zy,zx,xy)| then

Answer»

1.`Delta_(1)=-Delta`
2.`Delta_(1)=Delta`
3.`Delta_(1)NE Delta`
4.`Dela_(1)=2DELTA`

Answer :B


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