Question

Evaluate:(i)(9.8)2 (ii)(101)3​

Answer 1

Answer:

Solution

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Using the given identity (a−b)

2

=a

2

−2ab+b

2

to evaluate (9.8)

2

We can write (9.8)

2

= (10−0.2)

2

∴ (10−0.2)

2

= 10

2

−2(10)(0.2)+0.2

2

= 100−4+0.04

Hence the answer is 96.04

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Answer 2

Answer:

(I) 19.6

(II) 303

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