The solution equation: 4 (X-2) (x + 5) - (2x-3) (2x + 1) = 5
4 (x2 + 3x-10) - (4x2-4x-3) = 5, 4x2 + 12x-40-4x2 + 4x + 3 = 5, 16x = 42, x = 218
RELATED INFORMATIONS
- 1. It is known that the solution of the equation 1 / 2x = - 2 about X is 2 smaller than that of the equation 5x-2a = 0 about X. try to solve the equation 1 / ay-15 = 0 about y
- 2. How much is root 1.2 times root 54 times root 0.6
- 3. X * y is 4x + 5Y divided into axy, and 1 * 2 = 1, find the value of 2 * 3 There must be an operation process, and every step must have one
- 4. Let x, y, a be rational numbers, define x * y = axy4x + 5Y, and 1 * 2 = 1, try to find the value of 2 * 3
- 5. Known: x2 + Y2 + 6x-4y + 13 = 0. Find the value of (x + y) 2008
- 6. Given x + y + 6x-4y + 13 = 0, find the value of (x + y) to the power of 2008 Such as the title, to the detailed process
- 7. -Factorization of x ^ 2-5y (5y-2x)
- 8. Factorization of x ^ 2-y ^ 2 + X + 5y-6
- 9. If the quadratic power of (x-5y-16) + |5y-5x-4 | = 0, then x = (), y = ()
- 10. When Y-X = 5 x ^ 2-y ^ 2 + 5x + 5Y + 2009 =?
- 11. When a = (), the solution of equation a (x-1) = 2X-4 is x = 3
- 12. Explore the value of a, so that the root of the known equation 2x + a = 7 + X is (1) positive number; (2) positive even number
- 13. If the roots of the equation lgx = 8-2x x ∈ (k, K + 1), K ∈ Z, then k = () A. 2B. 3C. 4D. 5
- 14. Given that the root of equation 2x-7 / 8 (x + a) + 1 / 6 (x-a) = 8 is four times larger than that of equation 1 / 2-x-3 / 3 = 1, find the value of A
- 15. 2X+15=54
- 16. What kind of equation is obtained by translating the linear equation 2x-y + 4 = 0 down 3 units? How about y = 2x + 4 moving down 3 units?
- 17. 2*(x+2x)=54
- 18. How to solve the equation: 2x + 4 (21-x) = 54?
- 19. After the line y = 2x is translated 2 units along the positive direction of X axis, the expression is?
- 20. If x = - 2 is the root of the equation - ax + B = - 1 - 2x, what is the value of the algebraic expression 4A + 2B + 1