Question

Factorise x ki power 2n - x ki power n - 2 =0

Answer 1

${x}^{2n} - {x}^{n} - 2 = 0 \\ {x}^{2n} - 2 {x}^{n} + {x}^{n} - 2 = 0 \\ {x}^{n} ( {x}^{n} - 2) + 1( {x}^{n} - 2) = 0 \\ ( {x}^{n} - 2)( {x}^{n} + 1) = 0$