Solving the equation x ^ 2-5x + 2 = 0

5 ± root 17 -- fraction 2

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1. The equation is solved by proper methods: (1) (x + 6) 2-9 = 0; (2) x2-4x-2 = 0; (3) 3x2-8x + 4 = 0; (4) (X-2) = 5x (2-x)
2. How to solve the equation 5x-x = 20
3. Solve the equation 36 △ 5x = 2, and take 5x as divisor. The solution is as follows: 36 △ 5x = 2, 5x = 36 △ 2, 5x = 18, x = 3.6; However, if 5x is the abbreviation of 5 × x, the complete writing method of this problem should be 36 △ 5 × x = 2. According to the same level operation, it should be in the order from left to right. It should first calculate 36 △ 5 = 7.2, then 7.2x = 2, and X is equal to 5 / 18 What's going on?
4. 1 / 5x = 1 / 4x-18 to solve the equation Do not give the answer directly
5. Solution equation: 2 / 5x (x + 1 / 2) = 1 / 5
6. Solution equation: x ^ 3 + 5x + 18 = 0
7. 5x-20% x = 18.24
8. How to solve the equation of one sixth x + one twelfth x + one seventh x + 5 + one half x + 4 = x?
9. One seventh {one half [one fifth (half x-two + 1) - 1] + X} = 1
10. How to calculate that 3.6 minus x equals 1.4? It's an equation
11. 5x + 2 (30-x) = 99, solve equation 10
12. Solve the equation {1.5x + y = 36,2.25x + 1.2y = 45
13. 1.25x * 5 + 5x = 540 to solve the equation
14. 4 * (x-1.2) = 1.5x + 5.2 Time is urgent. Come on, help me!
15. 5x minus 1.2 * 5 = 4 solution equation
16. 3 / 5x + 80% * 1 / 4 = 4 / 5
17. The solution equation is: 2 / 3:2 = 5: X; 2.5x = 0.7:0.2; 1.5:3.6 = x: 5 2.5：x=0.7：0.2
18. Solve two equations: (120-50x) / 5 = 2 * (50x-5x) / (50 + 5) + (120-50x) / 50 and T = x + (120-50x) / 5
19. Solve the equation. 50x = 11.6%, 35x = 4x - 75X = 28 1 / 5x - 20 = 7.5%
20. 50x+100*3/5x=1100