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Using identities, evaluate. 8.9^2 ?????????????????????

Using identities, evaluate.
 8.9^2 ?????????????????????

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5964 Points
6 months ago
Dear Student

8.9^2 = (9 - 0.1)^2
= 9^2- 1.8 + 0.1^2
= 81 - 1.8 + 0.01
= 79.21

Thanks

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