Answer:
just add a small amount and and square the new number
between 2.82 and 2.83 seems a bit closer
Explanation:
x x^2
2.8 7.84
2.81 7.8961
2.82 7.9524
2.83 8.0089
2.84 8.0656
2.85 8.1225
2.86 8.1796
2.87 8.2369
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