1<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 2 <mrow> 3 <mn>6</mn> 4 <mfrac> 5 <mrow> 6 <msup> 7 <mi>α</mi> 8 <mn>3</mn> 9 </msup> 10 <mo>−</mo> 11 <msup> 12 <mi>α</mi> 13 <mn>2</mn> 14 </msup> 15 <mfenced> 16 <mrow> 17 <mn>2</mn> 18 <mi>β</mi> 19 <mo>−</mo> 20 <mn>1</mn> 21 </mrow> 22 </mfenced> 23 <mo>+</mo> 24 <msup> 25 <mi>β</mi> 26 <mn>2</mn> 27 </msup> 28 <mfenced> 29 <mrow> 30 <mi>β</mi> 31 <mo>−</mo> 32 <mn>1</mn> 33 </mrow> 34 </mfenced> 35 <mo>−</mo> 36 <mn>2</mn> 37 <mi>α</mi> 38 <mi>β</mi> 39 <mfenced> 40 <mrow> 41 <mi>β</mi> 42 <mo>+</mo> 43 <mn>2</mn> 44 </mrow> 45 </mfenced> 46 </mrow> 47 <mrow> 48 <mi>α</mi> 49 <mi>β</mi> 50 <mfenced> 51 <mrow> 52 <mi>α</mi> 53 <mo>+</mo> 54 <mi>β</mi> 55 <mo>+</mo> 56 <mn>2</mn> 57 </mrow> 58 </mfenced> 59 <mfenced> 60 <mrow> 61 <mi>α</mi> 62 <mo>+</mo> 63 <mi>β</mi> 64 <mo>+</mo> 65 <mn>3</mn> 66 </mrow> 67 </mfenced> 68 </mrow> 69 </mfrac> 70 </mrow> 71</math> 72 73