Math, asked by reshamTalreja, 11 months ago

90²-10² solve by using suitable identity

Answers

Answered by pranita5706
3

Answer:

Using identity, (a+b) (a-b)=a^2-b^2

a=90, b=10

(90+10) (90-10)

(100) (80)

8000

Answered by aarush113
15

90²-10²

By using the identity a² – b² = (a + b)(a – b), we get :

90²-10² = (90+10)(90-10)

= 100×80

= 8000

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