Question

Q2) factorise : 9x²y2 -25​

Answer 1

Here is your answer mate..

$9 {x}^{2} {y}^{2} - 25 \\ {(3xy)}^{2} - {5}^{2} \\ we \: know \: {a}^{2} - {b}^{2} = (a - b)(a + b) \\ substituting... \: \\ (3xy - 5)(3xy + 5)$

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