English: }x^{2n} \right\rbrack c_{0} +$ $\left\lbrack x + {( - 1)}^{n}\frac{( \propto + 2n)( \propto + 2n - 2)\ldots\ldots\ldots( \propto + 2)( \propto - 1)( \propto - 3)\ldots.
Telugu: {x^{2n} \right\rbrack c_{0} +$ $\left\lbrack x + {( - 1)}^{n}\frac{( \propto + 2n)( \propto + 2n - 2)\ldots\ldots(\propto + 2)( \propto - 1)( \propto - 3)\ldots.