Question

factorize the following by using suitable identities​

Answer 1

Answer:

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Step-by-step explanation:

$25 {a}^{3} b - 36ab {}^{3} \\ \\ab(25 {a}^{2} - 36 {b}^{2} ) \\ \\ab[(5a)^2 - (6b) ^2]\\ \\ using \: \: identity \\ x {}^{2} - {y}^{2} = (x + y)(x -y ) \\ \\ ab(5a - 6b)(5a + 6b)$