data/mathematical/184.mml
<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><msubsup><mo>∑</mo> <mrow><mi>ℓ</mi><mo>=</mo><mn>0</mn></mrow> <mi>n</mi></msubsup><msub><mi>T</mi> <mi>ℓ</mi></msub><mrow><mo>(</mo><mi>x</mi><mo>)</mo></mrow><msup><mi>x</mi> <mrow><mi>n</mi><mo>−</mo><mi>ℓ</mi></mrow></msup><mo>=</mo><msub><mi>U</mi> <mi>n</mi></msub><mrow><mo>(</mo><mi>x</mi><mo>)</mo></mrow></mrow><annotation encoding='application/x-tex'>\sum_{\ell=0}^{n}T_{\ell}\left(x\right)x^{n-\ell}=U_{n}\left(x\right)</annotation></semantics></math>