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Part A. A1 Let x be a real number such that (x−2)(x+2) = 2021. Determine the value of (x−1)(x+1). Solution: Expanding (x − 2)(x + 2) = 2021 yields x2 − 4 = 2021. Hence, x2 = 2025. Therefore, (x − 1)(x + 1) = x2 − 1 = 2025 − 1 = 2024. Answer: 2024 .
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Canadian Open Mathematics Challenge 2022 Official Solutions The COMC has three sections: A. Short answer questions worth 4 marks each. A correct answer receives full marks. Partial marks may be awarded for work shown if a correct answer is not provided. B. Short answer questions worth 6 marks each. A correct answer receives full marks. Partial ...
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MATHEMATICS REVISION BOOKLET MEMORANDUM 2021 TERM 3 Grade 11 This revision program is designed to assist you in revising the critical content and skills envisaged/ planned to be covered during the 3 rd term. The purpose is to prepare you to understand the key concepts and to provide you with an opportunity to establish the required standard
Solution 1: Since 2022×2023 = 2023×2022 we can think of 2021×2022+2022× 2023 as 2021 groups of 2022 added to 2023 groups of 2022 which is 4044 groups of 2022 or 4044 ×2022 = 2 ×2022 ×2022 = 2 ×20222 which is even, not a perfect square, not a multiple of 2021, and not prime. Since 2022 = 2 ×1011, our result can be written as
Nov 20, 2023 · The Corbettmaths Practice Questions on the Combined Mean.
Aug 25, 2021 · Now you are ready to find the mean, median, mode, and range of this data set. Step 01: Determine the Mean. To find the mean of the data set, remember to apply the mean formula, where you find the total sum of all of the numbers and divide it by the total number of values in the data set.
