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দৃশ্যকল্প: ( left. begin array c x+y+z=3 x+a y+a^ 2 z= ell x+a^ 2 y+a^ 4 z=m end array right , C= left[ begin array ll 1 & 2 3 & 0 end array right], f(x)=x^ 2 +3 x-7 ) | Suva Ai