Write a square (take quadratic as an example):
1, the integer part of the square is divided into two segments from the unit to the left, separated by apostrophes (for example, 625 is written as 6' 25;
2. According to the number (6) in the first paragraph on the left, the number (quotient) on the highest bit of the quadratic arithmetic root should be 2 (2× 2 = 4, less than 6, close to 6);
3. Subtract the number of the first paragraph (6) from the quadratic of the highest order (quotient) 2 (i.e. 6-4), and the difference is 2. Write the second paragraph number on the right of 2 as the first remainder, and the second paragraph is 25, that is, the remainder is 225;
4. Multiply the "quotient" 2 obtained in the first paragraph by 20 (that is, 40) to try the quotient of the remainder 225 (that is, 225÷40), which should be 5 (5× 40 = 200, less than 225, close to 225);
5. Multiply the quotient (2) by 20, then add the quotient (5) and multiply the quotient (5).
That is, [(2× 20)+5 ]× 5 = 225 is equal to the remainder, so 5 should be the second quotient (if it is less than the remainder, it is the "quotient" after the decimal point according to the above method).
Find the square root of 625 (that is, the square) is equal to 25.
/Article/ShowArticle.asp？ ArticleID= 120
/view/594735.htm
Manual square root
LZ, try it yourself