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OpenStudy (loser66):
How to prove, \[(r_2r_3^2-r_2^2r_3)-(r_1r_3^2-r_1^2r_3)+(r_1r_2^2-r_1^2r_2)= (r_3-r_1)(r_3-r_2)(r_2-r_1)\] Please, help
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OpenStudy (loser66):
I got it. Thanks for being here @ganeshie8
ganeshie8 (ganeshie8):
looks left side is row/column expansion ? any cute way to prove this ? :)
OpenStudy (loser66):
this from determinant of |dw:1379854886600:dw|
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