Question by Lê Quốc Trần Anh - Discuss with MathYouLike

Lê Quốc Trần Anh Coordinator

13/05/2018 at 03:14

Calculate: \(34^2+66^2+68.66\) in a quick way

List of answers

Dao Trong Luan Coordinator 13/05/2018 at 03:21

34² + 66² + 68.66

= 34² + 2.34.66 + 66²

= (34 + 66)² = 100² = 10000
Lê Quốc Trần Anh selected this answer.
HSG Phan Huy Toàn 16/05/2018 at 00:27

34² + 66² + 68 . 66

= (34² + 66² + 2 . 34 . 66)

= (34 + 36)²

=100²

=> 10000
Kaya Renger Coordinator 13/05/2018 at 03:19

\(34^2+66^2+68.66=\left(34^2+66^2+2.34.66\right)=\left(34+66\right)^2=100^2=10000\)

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