centerbaseline=false
mml=<math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mi mathvariant="normal">&#160;</mi><mfrac><mrow><msup><mi mathvariant="normal">n</mi><mn>2</mn></msup><msup><mfenced separators="|"><mrow><mi mathvariant="normal">n</mi><mo>+</mo><mn>1</mn></mrow></mfenced><mn>2</mn></msup></mrow><mn>4</mn></mfrac><mi mathvariant="normal">&#160;</mi><mfenced open="[" close="]" separators="|"><mrow><mn>1</mn><mo>+</mo><msup><mrow><mn>4</mn><mi mathvariant="normal">n</mi></mrow><mn>2</mn></msup><mo>+</mo><mn>4</mn><mi mathvariant="normal">n</mi></mrow></mfenced><mo>&#160;</mo><mo>=</mo><mfrac><mrow><msup><mi mathvariant="normal">n</mi><mn>2</mn></msup><msup><mfenced separators="|"><mrow><mi mathvariant="normal">n</mi><mo>+</mo><mn>1</mn></mrow></mfenced><mn>2</mn></msup></mrow><mn>4</mn></mfrac><mo>&#215;</mo><mfenced open="[" close="]" separators="|"><mrow><mn>1</mn><mo>+</mo><msup><mfenced separators="|"><mrow><mn>2</mn><mi mathvariant="normal">n</mi></mrow></mfenced><mn>2</mn></msup><mo>+</mo><mn>2</mn><mo>.2</mo><mi mathvariant="normal">n</mi><mn>1</mn></mrow></mfenced><mi>&#160;</mi></math>