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If is given that vecx= (vecbxxvecc)/([ve...

If is given that `vecx= (vecbxxvecc)/([veca,vecb,vecc]), vecy=(veccxxveca)/[(veca,vecb,vecc)], vecz=(vecaxxvecb)/[(veca,vecb,vecc)] where veca,vecb,vecc` are non coplanar vectors. Find the value of `vecx.(veca+vecb)+vecy.(vecc+vecb)+vecz(vecc+veca)`

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