Find the factors of (x² - 1 - 2a - a’).
Answers
Answered by
1
Answer:
x2−1−2a−a2
⇒ x2−(1+2a+a2)
⇒ x2−[(1)2+2×1×a+(a)2]
⇒ x2−(1+a)2 [ Since, a2+2ab+b2=(a+b)2 ]
We know, a2−b2=(a+b)(a−b)
⇒ (x+1+a)(x−1−a)
∴ x2−1−2a−a2 =(x+1+a)(x−1−a)
Answered by
0
Step-by-step explanation:
x
2
−1−2a−a
2
⇒ x
2
−(1+2a+a
2
)
⇒ x
2
−[(1)
2
+2×1×a+(a)
2
]
⇒ x
2
−(1+a)
2
[ Since, a
2
+2ab+b
2
=(a+b)
2
]
We know, a
2
−b
2
=(a+b)(a−b)
⇒ (x+1+a)(x−1−a)
∴ x
2
−1−2a−a
2
=(x+1+a)(x−1−a)
Similar questions