1)
2)
3) ā (5-3;8-1) = ā (2;7)
|ā| = √(2²+7²) = √53
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Answers & Comments
1)![(5^2)^2-625+25=5^4-5^4+5^2=5^2=25 (5^2)^2-625+25=5^4-5^4+5^2=5^2=25](https://tex.z-dn.net/?f=%285%5E2%29%5E2-625%2B25%3D5%5E4-5%5E4%2B5%5E2%3D5%5E2%3D25)
2)![2^4 ? 4^2\\2^4 ? {2^2}^2\\2^4 = 2^4\\2^4 = 4^2 2^4 ? 4^2\\2^4 ? {2^2}^2\\2^4 = 2^4\\2^4 = 4^2](https://tex.z-dn.net/?f=2%5E4%20%3F%204%5E2%5C%5C2%5E4%20%3F%20%7B2%5E2%7D%5E2%5C%5C2%5E4%20%3D%202%5E4%5C%5C2%5E4%20%3D%204%5E2)
3) ā (5-3;8-1) = ā (2;7)
|ā| = √(2²+7²) = √53