Q1 of 157 Page 22

Choose the correct answer for the following:

9.62 = __________

Given 9.62 = (10 – 0.4)2


We know that


(a– b)2 = a2 + b2 – 2a×b


⇒ 9.62 = 102 + 0.42 – 2(10)×(0.4)


⇒ 9.62 = 100 + 0.16 – 8


⇒ 9.62 = 92.16

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