Question

consider the following pattern:
2³– 1³= 1+2x1x3
3³–2³=1+3x2x3
4³–3³=1+4x3x3
using the above pattern, find the value of:
1) 15³–14³ 2) 22³– 21³ 3) 91³– 90³
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Answer 1

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