Solution equation: X & # 178; + 6x = 2x + 122x & # 178; - 3x-1 = 0. You can write it. Help me

Solution equation: X & # 178; + 6x = 2x + 122x & # 178; - 3x-1 = 0. You can write it. Help me

x²＋6x=2x＋12
X²＋4X－12＝0
﹙X－2﹚﹙X＋6﹚＝0
X-2 = 0 or x + 6 = 0
X = 2 or x = - 6
2x²-3x-1=0
x²－3/2x＝1/2
(x－3/4﹚²＝17/16
x－3/4＝±√17/4
X＝﹙3±√17﹚/4

Solution equation: (X-2) (x + 3) + (2-x) ^ 2 - (X-2) (2x-3) = 20
I just remember the answer is x = 7... But I don't remember the process

Your answer is right
Tip: don't take everything apart, or you'll be dead
Put (X-2) forward, and you will find that all x are eliminated to get 4 (X-2) = 20 and easy to get x = 7

Find the polar coordinate equation of a line passing through point (4, π 2) parallel to the polar axis

First, find the equation y = 4 of the straight line in the rectangular coordinate system, and then substitute x = rcost, y = rsint to get rsint = 4

Given that the polar coordinate of point P is (1, π), then the polar coordinate equation of the line passing through point P and perpendicular to the polar axis is ()
A. ρ=1B. ρ=cos θC. ρ=-1cosθD. ρ=1cosθ

If the Cartesian coordinate of point P is (- 1,0), then the linear equation of the line passing through point P and perpendicular to the polar axis is x = - 1, which is transformed into the polar coordinate equation of ρ cos θ = - 1, that is & nbsp; ρ = - 1cos θ, so C

How do you calculate 24 points (4 kinds)?

1:4 + (2 + 8) × 2
2:4 + ((2 + 8) × 2)
3:4 + (2 × (8 + 2))
4:4 + 2 ×(8 + 2)
5:(4 + 2) × 8 ÷ 2
6:((4 + 2) × 8) ÷ 2
7:(4 + 2) × (8 ÷ 2)
8:4 × 2 + 8 × 2
9:(4 × 2) + 8 × 2
10:4 × 2 +(8 × 2)
11:(4 × 2) + (8 × 2)
12:4 × (2 + 8 ÷ 2)
13:4 × (2 + (8 ÷ 2))
14:4 + (2 × (2 + 8))
15:4 + 2 ×(2 + 8)
16:(4 + 2) ÷ 2 × 8
17:((4 + 2) ÷ 2) × 8
18:(4 + 2) ÷ (2 ÷ 8)
19:(4 - 2 ÷ 2) × 8
20:(4 - (2 ÷ 2)) × 8
21:(4 × (2 + 2)) + 8
22:4 × (2 + 2) + 8
23:4 × 2 + 2 × 8
24:(4 × 2) + 2 × 8
25:4 × 2 +(2 × 8)
26:(4 × 2) + (2 × 8)
27:4 × 2 × 2 + 8
28:(4 × 2) × 2 + 8
29:(4 × 2 × 2) + 8
30:((4 × 2) × 2) + 8
31:(4 × (2 × 2)) + 8
32:4 × (2 × 2) + 8
33:4 + (8 + 2) × 2
34:4 + ((8 + 2) × 2)
35:4 × (8 ÷ 2 + 2)
36:4 × ((8 ÷ 2) + 2)
37:(2 + 4) × 8 ÷ 2
38:((2 + 4) × 8) ÷ 2
39:(2 + 4) × (8 ÷ 2)
40:2 × 4 + 8 × 2
41:(2 × 4) + 8 × 2
42:2 × 4 +(8 × 2)
43:(2 × 4) + (8 × 2)
44:(2 + 4) ÷ 2 × 8
45:((2 + 4) ÷ 2) × 8
46:(2 + 4) ÷ (2 ÷ 8)
47:2 × 4 + 2 × 8
48:(2 × 4) + 2 × 8
49:2 × 4 +(2 × 8)
50:(2 × 4) + (2 × 8)
51:2 × 4 × 2 + 8
52:(2 × 4) × 2 + 8
53:(2 × 4 × 2) + 8
54:((2 × 4) × 2) + 8
55:(2 × (4 × 2)) + 8
56:2 × (4 × 2) + 8
57:2 × 8 + 4 × 2
58:(2 × 8) + 4 × 2
59:2 × 8 +(4 × 2)
60:(2 × 8) + (4 × 2)
61:(2 × 8 - 4) × 2
62:((2 × 8) - 4) × 2
63:(2 + 8) × 2 + 4
64:((2 + 8) × 2) + 4
65:(2 + 8 ÷ 2) × 4
66:(2 + (8 ÷ 2)) × 4
67:(2 × (8 + 2)) + 4
68:2 × (8 + 2) + 4
69:2 × 8 + 2 × 4
70:(2 × 8) + 2 × 4
71:2 × 8 +(2 × 4)
72:(2 × 8) + (2 × 4)
73:2 × (8 × 2 - 4)
74:2 × ((8 × 2) - 4)
75:(2 + 2) × 4 + 8
76:((2 + 2) × 4) + 8
77:2 × 2 × 4 + 8
78:(2 × 2) × 4 + 8
79:(2 × 2 × 4) + 8
80:((2 × 2) × 4) + 8
81:(2 × (2 × 4)) + 8
82:2 × (2 × 4) + 8
83:(2 × (2 + 8)) + 4
84:2 × (2 + 8) + 4
85:2 × (2 × 8 - 4)
86:2 × ((2 × 8) - 4)
87:8 + (4 × (2 + 2))
88:8 + 4 ×(2 + 2)
89:8 + 4 × 2 × 2
90:8 + (4 × 2) × 2
91:8 + (4 × 2 × 2)
92:8 + ((4 × 2) × 2)
93:8 + (4 × (2 × 2))
94:8 + 4 ×(2 × 2)
95:(8 × (4 + 2)) ÷ 2
96:8 × (4 + 2) ÷ 2
97:8 × ((4 + 2) ÷ 2)
98:8 × (4 - 2 ÷ 2)
99:8 × (4 - (2 ÷ 2))
100:8 + 2 × 4 × 2
101:8 + (2 × 4) × 2
102:8 + (2 × 4 × 2)
103:8 + ((2 × 4) × 2)
104:8 + (2 × (4 × 2))
105:8 + 2 ×(4 × 2)
106:8 × 2 + 4 × 2
107:(8 × 2) + 4 × 2
108:8 × 2 +(4 × 2)
109:(8 × 2) + (4 × 2)
110:(8 × (2 + 4)) ÷ 2
111:8 × (2 + 4) ÷ 2
112:8 × ((2 + 4) ÷ 2)
113:(8 × 2 - 4) × 2
114:((8 × 2) - 4) × 2
115:8 ÷ 2 ×(4 + 2)
116:(8 ÷ 2) × (4 + 2)
117:8 ÷ (2 ÷ (4 + 2))
118:8 + (2 + 2) × 4
119:8 + ((2 + 2) × 4)
120:(8 + 2) × 2 + 4
121:((8 + 2) × 2) + 4
122:8 + 2 × 2 × 4
123:8 + (2 × 2) × 4
124:8 + (2 × 2 × 4)
125:8 + ((2 × 2) × 4)
126:8 + (2 × (2 × 4))
127:8 + 2 ×(2 × 4)
128:8 × 2 + 2 × 4
129:(8 × 2) + 2 × 4
130:8 × 2 +(2 × 4)
131:(8 × 2) + (2 × 4)
132:(8 ÷ 2 + 2) × 4
133:((8 ÷ 2) + 2) × 4
134:8 ÷ 2 ×(2 + 4)
135:(8 ÷ 2) × (2 + 4)
136:8 ÷ (2 ÷ (2 + 4))

It's 24.2.4.8
Use 2.2.4.8

1:(2 + 2) × 4 + 82:((2 + 2) × 4) + 83:2 × 2 × 4 + 84:(2 × 2) × 4 + 85:(2 × 2 × 4) + 86:((2 × 2) × 4) + 87:(2 × (2 × 4)) + 88:2 × (2 × 4) + 89:(2 × (2 + 8)) + 410:2 × (2 + 8) + 411:2 ×...

Use 2, 4, 6, 8 to calculate 24 points

8*6/（4/2）
8/4*6*2
8*6/（4-2）
4*8-6-2
That's all,

Count 24:3,5,7,13, if you know. Thank you

（5*13+7）/3=24 (7 + 5 × 13) ÷ 3=24 (7 + (13 × 5)) ÷ 3=24

Calculate 24.3 3 8 8

8÷（3-8÷3）
=8÷(3-8/3)
=8÷1/3
=24

1,2,3,2 four numbers do 24 points
There are also three questions, four 4 brackets and operation symbols, the result is 5, there are also four 4 brackets and operation symbols, the result is 9, how to add? There is also a calculation question: 1 + 2 + 2 quadratic + 2 cubic + +2's 2007 power + 2's 2008 power, simple operation, clear writing process! Four questions one answer is five points, three 15 points, I am absolutely trustworthy ah!

Cube of 1.2 * (1 + 2) = 8 * 3 = 24
2.(4*4+4)/4 = 5
3.4+4+4/4 = 9
4. The original formula is Formula 1
Mark every * 2 in Formula 1 as formula 2, formula 2 = 2 * Formula 1
Formula 2-formula 1 = the power of Formula 1 = 2-1