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Question
Find the value of the following.
(−2)3 × (−10)3
Sum
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Solution
(−2)3 × (−10)3 = (−1)3 × (−2)3 × (−1)3 × (−10)3
= (−1)3+3 × 23 × 103 ...[Grouping the terms of same base]
= (−1)6 × (2 × 10)3
[∵ am × bm = (a × b)m]
= 1 × 203 ...[since (−1)n = 1 if n is even]
= 8000
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Chapter 3: Algebra - Exercise 3.1 [Page 52]
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