Mathematics
Junior High
Solved
中学3年の式の値です。この3つの問題の、計算の工夫の仕方を教えてもらいたいです🙇
(10) 165 ² - 162 × 168
(11) 145 × 149 – 150 × 144
(12) 175 2
9
5
- 171 × 178 + 177 ² - 171 × 169
2617
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