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Question

If A=(3240) and B=(3032) then, find ABandBA.

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Solution

AB=(3240)(3032)
=(3×3+2×33×0+2×24×3+0×34×0+0×2)
=(9+60+412+00+0)
AB=(154120)
Again BA=(3032)(3240)
=(3×3+0×43×2+0×03×3+2×43×2+2×0)
=(9+06+09+86+0)
BA=(96176)

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