Question

Factorize (a4 - 8a2b2 + 16b4) – 81

Answer 1

Step-by-step explanation:

(a⁴-8a²b²+16b⁴)-81

={(a²)²-2×a²×b²+(4b²)²}-(9)²}

=(a²-4b²)²-(9)²

=(a²-4b²+9)(a²-4b²-9)

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Answer 2

Answer:

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