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Question
If m = 2, find the difference between the values of 4m3 and 3m4.
Sum
Solution
4m3 = 4 (2)3 = 4 × 2 × 2 × 2 = 32
3m4 = 3 (2)4 = 3 × 2 × 2 × 2 × 2 = 48
Now, a difference 3m4 – 4m3 = 48 – 32 = 16
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Concept of Substitution
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