paripihu2509 paripihu2509

22-07-2021
Mathematics

contestada

Factorise.. 25a sq. - 9b sq. please tell the answer

Respuesta :

tanmayakumarp3 tanmayakumarp3

22-07-2021

Answer:

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

Step-by-step explanation:

Given,

[tex] {25a}^{2} - {9b}^{2} [/tex]

[tex] = {(5a)}^{2} - {(3b)}^{2} [/tex]

Since,

[tex] {x}^{2} - {y}^{2} = (x + y)(x - y)[/tex]

Then,

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

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