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Simplification: a (a + 2) - (A-1) (a + 1) Using the complete square formula to calculate: (-x-y)^2
1、a²+2a-(a²-1）
=a²+2a-a²+1
=2a+1
(-x-y)²
=(x+y)²
=x²+2xy+y²
RELATED INFORMATIONS
- 1. (a + 2) (A-2) - A (a + 1) simplification
- 2. Reduction ratio: 0.375:3 / 8 Please write the formula, too.
- 3. 2 / 3 to 1 reduction ratio
- 4. 4 / 3:1.6 for simplification ratio
- 5. Simplification + [- (+ 7)], [- (- 2.3)], - [+ (- 1 / 4)]?
- 6. What is 84 / 162 simplification?
- 7. 162 out of 84
- 8. 16.78-2.54. - 3.32-1.46?
- 9. (): () = 0.375 = 27: () = 32 of what
- 10. 27: () = 1 / 16 () = 0.375 = () 24
- 11. The result of simplifying (a ^ 2 / A-1) - A-1 is
- 12. 3:0.250.8:1 and 5:7.4:3:1.25 3:7:4 reduction ratio
- 13. 1, calculate the following ratios: 1 / 3:1 / 7 = () 90g: 0.6kg () 2, simplify the following ratios: 3.5:25 = () 3. Dissolve 25 grams of salt into 200 grams of water. The simplest weight ratio of salt to brine is () 4. If the ratio of two numbers is 1 / 4, and the former and latter terms of the ratio are expanded four times at the same time, then the ratio is equal to () 5,3 percentage points is (), 0.5 has () 1%
- 14. 2: 1 / 3 0.375 20%: 0.6 (1) simplify the following ratio. (2) calculate the ratio
- 15. 625, and the ratio is calculated
- 16. Simplify the following ratios and calculate the ratio. 3 / 20:3 / 80.625:3 / 40.3:0.18 3/20：3/8 0.625：3/4 0.3：0.18
- 17. Three to one is equal to one-third is equal to several to four, and 0.625 is equal to three-quarters
- 18. 3 and 3 / 4 × 73.5-3.75 × 57.3 + 16.2 × 6 and 1 / 4 = simple calculation
- 19. 9% of 76 × 75 + 8% of 74 × 75 can be calculated simply
- 20. Simple calculation of 0.375 × 4 and 3 / 8-3 / 8 + 6.625 × 0.375