Question

the
factors of a ²-1-2x - x² are​

Answer 1

$\huge \mathscr{\orange {\underline{\pink{\underline {Answer:-}}}}}$

a²−1−2x−x²

⇒  a²−(1+2x+x³)

⇒  a²−[(1)2+2×1×x+(x)¹]

⇒  a²−(1+x)²

⇒  [a+(1+x)][a−(1+x)]

⇒  (a+1+x)(a−1−x)

⇒  (a+x+1)(a−x−1)