Question

89×111 by using suitable identity

Answer 1

Answer:

9879

Step-by-step explanation:

Please find the attached file.

Answer 2

Ans: 9879

step by step explanation

Given

89 x 111. = (100 - 11)(100+11)

= (a + b) (a - b) = a^2 -- b^2

= 100^2 -- 11^2

= 10000 --121

= 9879

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