Q. 4.     If a=2,b=-2,  find the value of:

             (i)  a^{2}+b^{2}

Answers (1)
S Sayak

a2 + b2

= ( 2 )2 + ( -2 )2 

= 4 + 4

= 8

If a = 2 and b = -2 the value of a2 + b2 = 8

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