algebra

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please explaing reversing the digits. Find the product of 2 two digit numbers and reverse the digits and find the product. The products are the same. Does this happen with any pair of two-digit numbers? Eplain your thinking in solving this problem and include any mathematical work. Thank-you.

  • algebra -

    xy * wz = (10x + y)(10w+z)
    =100xw+10xz+10yw+yz

    yx * zw = (10y+x)(10z+w)
    =100yz+10yw+10xz+xw

    These can be the same but not usually
    eg
    12*21

  • algebra -

    Thank-you Damon

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