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The points a-2b+3c, 2a+3b-4c, -7b+10 c are |
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Answer» COLLINEAR Then, `OA=a-2b +3c` `OB=2a+3b-4c` and `OC=7b+10c` Now, `AC+OC-OA` `="("-7b+10c-(a-2b+3c)` `=-a-5b+7c` `AB=OB-OA` `=(2a+3b-4c)-(a-2b+3c)` `=a+5b-7c` `:. AB =-AB =(-1) XX AC`=scalar `xx AC` HENCE, the points A, B and C are collinear. |
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