Q1 of 95 Page 83

Compute the following in head:

10.7 9.3

it can be written as (10+0.7) (10-0.7)

using identity -


(10+0.7) (10-0.7) = -


= 100 - 0.49


= 99.51


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1

Compute the following in head:

 1

Compute the following in head:

10.7 9.3

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Look at this pattern:


Explain the general principle using algebra.

 2

Look at this pattern:


Explain the general principle using algebra.