Adv
AnilSinghBora
  • 0
Guru

Evaluate the following using suitable identities: (i) (99)3 Q.7(1)

  • 0

I want to know the best solution of the question from class 9th ncert math of Polynomials chapter of exercise 2.5 of math How i solve the question of this class in simple and easy way Evaluate the following using suitable identities: (i) (99)3

Share

1 Answer

  1. We can write 99 as 100–1

    Using identity, (x –y)3 = x3–y3–3xy(x–y)

    (99)3 = (100–1)3

    = (100)3–13–(3×100×1)(100–1)

    = 1000000 –1–300(100 – 1)

    = 1000000–1–30000+300

    = 970299

    • 0
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