Question

factorise a²-1-2x-x²​

Answer 1

Answer:

Answer

Correct option is

C

(a+x+1)(a−x−1)

a

2

−1−2x−x

2

⇒ a

2

−(1+2x+x

3

)

⇒ a

2

−[(1)

2

+2×1×x+(x)

2

]

⇒ a

2

−(1+x)

2

⇒ [a+(1+x)][a−(1+x)]

⇒ (a+1+x)(a−1−x)

⇒ (a+x+1)(a−x−1)

Answer 2

Answer:

1(a²-1)-x(2-x)

Step-by-step explanation:

give thanks and follow