| CommandFactor Expression
  
 A sum that contains 2 terms.  The first  term of the sum  is equal to  a product containing 2 factors.  The first   factor of the product   is equal to  eight.   The second  factor of the product  is equal to  a power.  The base is x.  The exponent is three.   The second  term of the sum  is equal to   a negative product consisting of 3 factors.  The first  factor of the product  is equal to  seventy two.   The second  factor of the product  is equal to  x.  The third  factor of the product  is equal to  a power.  The base is y.  The exponent is two.eight  times x to the power three  plus  negative seventy two  multiplied by x times y raised to the power of two.
 Result
  
 A product comprising 4 factors; the first  factor of the product  is equal to   negative eight;  the second  factor of the product  is  x; the third  factor of the product  is equal to  a sum that consists of 2 terms; the first  term of the sum  is  a product that comprises 2 factors; the first  factor of the product  is  three;  the second  factor of the product  is equal to  y; the second  term of the sum  is equal to   negative x; the four  factor of the product  is equal to  a sum comprising 2 terms; the first  term of the sum  is equal to  a product that contains 2 factors; the first  factor of the product  is  three;  the second  factor of the product  is  y; the second  term of the sum  is  x;negative eight  multiplied by x times open brace three  times y plus  negative x close brace times open parenthesis three  times y plus x  close parenthesis;
 
 
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