Question

Factorise each of the following: 125a² – 45b² using identites​

Answer 1

Answer:

$125 {a}^{2} - 45 {b}^{2} = 5(25 {a}^{2} - 9 {b}^{2} ) = 5( {(5a)}^{2} - {(3b)}^{2} = 5(5a - 3b)(5a + 3b)$

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Answer 2

Answer:

5(5a²+3b²) (5a²-3b²)

Step-by-step explanation:

5 (25a²- 9b²)

5 (5a+3b) (5a-3b)