Let the quadratic function f (X-2) = f (- X-2), the intercept of the picture on y is 1, and the length of the line cut by X axis is 2 times of the root 2. The analytic expression of F (x) is obtained

From the function f (X-2) = f (- X-2), the symmetry axis of the function is - 2,
Because | x1-x2 |, the intersection of function and X axis is (- 2-radical 2,0), (- 2 + radical 2,0)
So let function = a (x + 2 + radical 2) (x + 2-radical 2)
So f (0) = 1, a = 1 / 2
There are still several ways. I'll tell you if I don't understand

Write the following pseudo code to find 1 square + 2 square + 3 square +... + n square

20 points. Saliva. I'll solve it. The complete code of VB language is as follows: private sub command1_ Click () s = 1 I = 2 while s < 1000 a = I ^ 2 s = S + I ^ 2 I = I + 1 wend print I-2 End Sub running result is: 13 the answer you want is [I-2]

Calculate the second power of 1 + 2 + 2 + +Write the program statement of this algorithm
This is the answer to the test paper. Please standardize it

The result is 1.84467440737096 * 10 ^ 19
Private Sub Command1_ Click()
Dim sum As Double
Dim i As Integer
For i = 0 To 63
sum = sum + 2 ^ i
Next i
Debug.Print sum
End Sub

If a cube with a side length of a is cut into 27 congruent cubes, the increase of surface area is______ ．

According to the meaning of the title, the surface area of the cube is 6A2; the edge length of the small cube is 13a, and the surface area of the small cube is 6 × (13a) 2 = 23a2; the surface area of 27 congruent small cubes is 18A2, and the surface area increases by 18a2-6a2 = 12a2

Let the quadratic function f (X-2) = f (- X-2), the intercept of the picture on y is 1, and the length of the line cut by X axis is 2 times of the root 2. The analytic expression of F (x) is obtained