When x tends to - 2, the second power of X + 2 / X is + 5x + 6

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• 1. Vertex formula of x-square-5x + 6 function 4ac-b square / 4A is the b square in this one 25 or - 25
• 2. It is known that the power of 2m + n-3 of equation 5x + 7ym + 3n-1 = 2 is a quadratic equation with respect to X and Y. the value of M and N can be obtained Another question is: when x = y + 1, write a solution of this equation
• 3. What is the coefficient of the highest power term of the third power of 5x - the fourth power of 3x - the fifth power of 0.1X + 2?
• 4. One third + two-thirds of the square of three + three-thirds of the power of three +. + three of the power of six is equal to how much, in not calculate?
• 5. How much is the sum of 2n plus one power of two negative two? Only the 2n + 1 power of A.2. The 2n + 1 power of negative 2 C.0 D.1
• 6. The third power of (A's Square) × (A's fifth power) The nth power of (a to the 3rd power) × (a to the nth power) The fourth power of (- x to the m power) multiplied by X
• 7. What is the square of 4 (a + b) - 9 (a + b)? yes Square of 4 (a + b) - square of 9 (a-b) Sorry, wrong number
• 8. The absolute value of a is 4, the square of B is 9, a is larger than B, what is the value of A-B
• 9. What is the square of 16 (a-b) + (the square of B-A) + the square of 9 (a + b)?
• 10. If a / b = 2, what is the quadratic power of a - AB + the quadratic power of B / the quadratic power of a + the quadratic power of B
• 11. Given that the 2x power of 3 = the 3x power of 4 = the 6th power of 12, the basic problem of finding the value of 3 / x + 2 / y is higher than one
• 12. (- 3x to the second power) (x to the second power - 2x-3) + 3x (x to the third power - 2x to the second power - 5) =
• 13. Given the nth power of 2 = a, the nth power of 6 = B, find the value of 12 ν n
• 14. Look at the following column: 2 / 3, 3 / 8, 4 / 15, 5 / 24, 6 / 35
• 15. If you look at the following formulas, what rules do you find? 3 × 5 = 15, and 15 = 42-1; 5 × 7 = 35, and 35 = 62-1,11 If you look at the following formulas, what rules will you find? 3 × 5 = 15, and 15 = 42-1; 5 × 7 = 35, and 35 = 62-1, 11 × 13 = 143, and 143 = 122-1____________ .
• 16. How to correct 5 out of 7-2 out of 15-12 out of 30
• 17. Simple method 23 and three fifths * 25-12 and three fifths * 25 + 8 and two fifths * 25 (18 and three fifths) square - (16 and seven fifths) square
• 18. [- 5 / 4] / 0.25 / [- 15 / 4] [- 2 / 5] square / [- 12 / 5] - 8 / 21 * [- 7 / 4] - 0.25
• 19. [- 5 / 4] / 0.25 / [- 15 / 4] [- 2 / 5] square / [- 12 / 5] - 8 / 21 * [- 7 / 4] - 0.25
• 20. 5 / 6 - (3 / 4-1 / 2) 2 / 5 + 2 / 3-2 / 5 a simple method requires a simple procedure What can be used is easy to use