mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>&#x2234;</mo><mi mathvariant="normal">&#xA0;</mi><mfrac><mrow><msup><mi mathvariant="normal">x</mi><mn>6</mn></msup><mo>+</mo><msup><mi mathvariant="normal">x</mi><mn>4</mn></msup><mo>+</mo><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup><mo>+</mo><mn>1</mn></mrow><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mfrac><mo>=</mo><mfrac><mrow><msup><mfenced separators="|"><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup></mfenced><mn>3</mn></msup><mo>+</mo><msup><mfenced separators="|"><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup></mfenced><mn>2</mn></msup><mo>+</mo><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup><mo>+</mo><mn>1</mn></mrow><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mfrac><mspace linebreak="newline"/><mo>=</mo><mfrac><mrow><msup><mfenced separators="|"><mrow><mn>3</mn><mi mathvariant="normal">x</mi><mo>-</mo><mn>1</mn></mrow></mfenced><mn>3</mn></msup><mo>+</mo><msup><mfenced separators="|"><mrow><mn>3</mn><mi mathvariant="normal">x</mi><mo>-</mo><mn>1</mn></mrow></mfenced><mn>2</mn></msup><mo>+</mo><mn>3</mn><mi mathvariant="normal">x</mi><mo>-</mo><mn>1</mn><mo>+</mo><mn>1</mn></mrow><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mfrac><mspace linebreak="newline"/><mo>=</mo><mfrac><mrow><msup><mfenced separators="|"><mrow><mn>3</mn><mi mathvariant="normal">x</mi></mrow></mfenced><mn>3</mn></msup><mo>-</mo><msup><mfenced separators="|"><mrow><mo>-</mo><mn>1</mn></mrow></mfenced><mn>3</mn></msup><mo>-</mo><mn>3</mn><mi mathvariant="normal">x</mi><mi mathvariant="normal">&#xA0;</mi><mfenced separators="|"><mrow><mn>3</mn><mi mathvariant="normal">x</mi><mo>-</mo><mn>1</mn></mrow></mfenced><mo>+</mo><msup><mfenced separators="|"><mrow><mn>3</mn><mi mathvariant="normal">x</mi></mrow></mfenced><mn>2</mn></msup><mo>+</mo><msup><mfenced separators="|"><mn>1</mn></mfenced><mn>2</mn></msup><mo>-</mo><mn>6</mn><mi mathvariant="normal">x</mi><mo>+</mo><mn>3</mn><mi mathvariant="normal">x</mi></mrow><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mfrac><mspace linebreak="newline"/><mo>=</mo><mfrac><mrow><mn>27</mn><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup><mo>-</mo><mn>1</mn><mo>-</mo><mn>9</mn><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup><mo>+</mo><mn>3</mn><mi mathvariant="normal">x</mi><mo>+</mo><mn>9</mn><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup><mo>+</mo><mn>1</mn><mo>-</mo><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mrow><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mfrac><mo>=</mo><mfrac><mrow><mn>27</mn><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mrow><msup><mi mathvariant="normal">x</mi><mn>3</mn></msup></mfrac><mo>=</mo><mn>27</mn></math>