Math trick
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The document discusses multiplication and subtraction of quadratic forms. It provides examples of multiplying large numbers together, such as 78965153 476, and subtracting numbers with multiple digits, such as 21522 - 1322. It also shows the steps to simplify expressions related to quadratic forms, such as simplifying X2 - X2 to 0.
Math trick
- 5. MULTIPLICATION 7 8 15697 35 x 4 6 26 4 0 4 0 3 2 6 0 6 0 8 5 7 5 1 8 2 9 2 6 8 4 2 3 2 22 10 54 3 4 346 354 3 0 3 2 0 3 1
- 6. Next step 7 8 15697 35 x 4 6 26 4 0 4 0 3 2 6 0 6 0 8 5 7 5 1 8 2 9 2 6 8 4 2 3 2 22 10 54 3 4 346 354 3 0 3 2 0 3 1 11212222 822 8 5 8 7 4 1 4 7
- 7. Finally 78965153 476 = 47587412828 BACK
- 8. Substruction for Quadratic Form 21522 C 1322 = ?
- 9. 21522 C 1322 = 2152 + 132 = 2284
- 10. 21522 C 1322 = 2152 132 = 2020
- 11. 21522 C 1322 = 2152+132 = 2284 21522 C 1322 = 2152-132 = 2020
- 12. 0 22 48 x 2 2 84 4 6 4 4 6 8 0 0 0 0 10 00 0 0 0 0 0 0 1 0 00 0 0 0 0 0 0 0 1 1 03 6 8 1 6 4 0
- 13. Finally 21522 C 1322 = 4613680 BACK
- 14. Is it true that 1 = 1? X2 = X2 X2 - X2 = X2 - X2 X (X - X ) = ( X + X )( X - X ) X (X - X ) = ( X + X )( X - X ) X = X + X X = 2 X 1 = 2 (1) So . 1 = 2 +( -X2 ) X2 - Y2 = (X - Y )(X + Y)