English

If A BC=[21-12],B=[1-221],C=[1-321], then ____________. -

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Question

If A `= [(2,1),(-1,2)], "B" = [(1,-2),(2,1)], "C" = [(1,-3),(2,1)],` then ____________.

Options

  • A + B = B + A and A + (B + C) = (A + B) + C

  • A + B = B + A and AC = BC

  • A + B = B + A and AB = BC

  • AC = BC and A = BC

MCQ
Fill in the Blanks

Solution

If A `= [(2,1),(-1,2)], "B" = [(1,-2),(2,1)], "C" = [(1,-3),(2,1)],` then A + B = B + A and A + (B + C) = (A + B) + C.

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