Question

a⁴-b⁴+2b²-1
Factorisation
Answer is (a²+b²-1)(a²-b²+1)

Answer 1

a⁴ - b⁴ +2b² -1

= a⁴ - { b⁴ -2b² +1 }

= a⁴ - { (b²)² -2.(b²).1 + 1 }

= (a²)² - { (b² -1 )² }

={a² - b² +1 }{ a² + b² -1}

=( a² -b² +1)( a² + b² -1)

Answer 2

Answer:

Here is your answer.

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