Adv
AnilSinghBora
  • 0
Guru

Factorise each of the following:(iii) 27–125a3–135a +225a2 Q.8(3)

  • 0

Please guide me the best way for solving the question of class 9th math of Polynomials chapter of exercise 2.5 of math of question no.8(3) What is the best way for solving this question, please guide me Factorise each of the following:(iii) 27–125a3–135a +225a2

Share

1 Answer

  1. The expression, 27–125a3–135a +225a2 can be written as 33–(5a)3–3(3)2(5a)+3(3)(5a)2

    27–125a3–135a+225a2 =
    33–(5a)3–3(3)2(5a)+3(3)(5a)2

    = (3–5a)3

    = (3–5a)(3–5a)(3–5a)

    Here, the identity, (x–y)3 = x3–y3-3xy(x–y) is used.

    • 1
Leave an answer

Leave an answer

Browse

Choose from here the video type.

Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".

Captcha Click on image to update the captcha.

Related Questions