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Question
If m = – 7, evaluate:
2m3
Sum
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Solution
2m3
= 2 × m × m × m
= 2 × (− 7) × (− 7) × (− 7)
= 2 × (− 343)
= − 686
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Find T, if T = 2a – b, a = 7 and b = 3.
