2. Evaluate using identity
() (608)2 – (609)
(ii) (78)2 – (88)​

1 thought on “2. Evaluate using identity<br />() (608)2 – (609)<br />(ii) (78)2 – (88)​”

1. Answer:

   1) (i) (609)

   2

   =(600+9)

   2

   =(600)

   2

   +2×600×9+(9)

   2

   =360000+10800+81=370881

   (ii) (725)

   2

   =(700+25)

   2

   =(700)

   2

   +2×700×25+(25)

   2

   =490000+35000+625=525625

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