Question

factorize 25 - x²y² where the answer is (5+xy)(5-xy)
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Answer 1

Answer:

25 - x²y²=(5)² - (xy)²

Identity 3: a²-b²=(a+b)(a-b)

So, (5)² - (xy)²=(5+xy)(5-xy)

Answer 2

Answer:

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