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দৃশ্যকল্প-১ : (x-2 y+z=1 ) (2 x+6 y-z=2 ) (x+3 y-3 z=3 ) দৃশ্যকল্প-২ : ( Delta= left| begin array lll 1 & x & x^ 2 1 & y & y^ 2 1 & z & z^ 2 end array right|, Delta_ 1 = left| begi | Suva Ai