Question
(51.99² - 19.05² )÷ ? = 14.11² -
140.33Solution
(51.99² - 19.05²) ÷ ? = 14.11² - 140.33 (52² - 19²) ÷ ? = 14² - 140 (2704 – 361) ÷ ? = 196 – 140 2343 ÷ ? = 56 ? = 2343/56 = 41.83 ≈ 42
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