(Factorise) a⁴ - 2a² +1
Answers
Answered by
1
Answer:
(a²-1)²
Step-by-step explanation:
a⁴-2a²+1
= a⁴-a²-a²+1
= a²(a²-1)-1(a²-1)
= (a²-1)(a²-1)
= (a²-1)²
Answered by
0
Answer:
(a² - 1)²
Step-by-step explanation:
a⁴ - 2a² +1 [ (a - b)² = a² - 2ab + b² ]
(a² )² -2 (a²) (1) + (1) ²
==> (a² - 1)²
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