Factorise the following:
81x^2-90xy + 25y^2
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Answer:
(9x-5Y)(9X-5Y)
Step-by-step explanation:
81X²- 90XY+ 25Y²
(9X)²- 2× 9X × 5Y +(5Y)²
basically it's is (a-b)²
that is (9X–5Y)²
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