Q1 of 95 Page 72

Now compute the squares of these numbers in head:

Using (x+y)2 = x2 + xy +yx +y2






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1

Now compute the squares of these numbers in head:

105

 1

Now compute the squares of these numbers in head:

105

 1

Now compute the squares of these numbers in head:

 1

Now compute the squares of these numbers in head:

10.2