If `veca,vecb,vecc` are non coplanar vectors, prove that the following points

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If `veca,vecb,vecc` are non coplanar vectors, prove that the following points are coplanar: `6veca-4vecb+10vecc, -5vecas+3vecb-10vecc, 4veca-6vecb-10vecc,2vecb+10vecc`
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