Question

(a square - b sq) (a sq + b sq )-(a sq -b sq) whole sq.​

Answer 1

(a²-b²) (a²+b²) - (a²-b²) ²

a²-b² [(a²+b²) - (a²-b²)

a²- b² ( a²+b²-a²+b²)

2b²(a²-b²)

2b²(a+b)(a-b)

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