The process of solving the problem that the square of (2x minus three) equals the root of two (2x minus three)

The process of solving the problem that the square of (2x minus three) equals the root of two (2x minus three)


(2x-3)^2=√(2x-3)
When √ (2x-3) is not equal to 0
(2x-3)^(3/2)=1
2x-3=1
x=2
When √ (2x-3) = 0
X = 3 / 2 also holds
So X1 = 2, X2 = 3 / 2



Eight eights are filled with operation symbols to make them equal to 1000


(8×8+8×8)×8-8-8-8=1000



Given the linear function y = 3x + m of 2 and y = LX + n of negative 2, the image is all right
Through point a (- 2,0), and intersect with y axis at point B and point C respectively, the area of triangle ABC is calculated


Put a in
0=3*(-2)/2+m,m=3
0=(-1/2)*(-2)+n,n=-1
So y = 3x / 2 + 3, x = 0, y = 3
y=-1/2x-1,x=0,y=-1
So B (0,3), C (0, - 1)
So BC = | - 1-3 | = 4
The bottom of the triangle is equal to 4
Height is the distance from a to BC, that is, the distance of Y axis = | - 2 | = 2
So area = 4 * 2 / 2 = 4



A cuboid is 4dm long and 2.5dm wide. How many cubic decimeters is its volume?


The cuboid volume algorithm is length × height × width
So its volume is 4 × 2.5 × 3 = 30



4,5,10, - 6 are 24 points


(1 - 3 ÷ 4) 2: 6 ÷ (1 - (3 ÷ 4)) 5*7-2-9=24 4*(10-1)-12=24 (11*13+1)/6=24 6/(1-3/4)=24



The function f (x) = - 1 / 3x ^ 3 + BX ^ 2-3a ^ 2x (a ≠ 0) is known to obtain the extremum at x = A. (1) find the value of B / A


(1) We get f '(x) = - x2 + 2bx-3a2, because f' (a) = 0 & # 8658; b = 2A & # 8658; f (x) = - 13x3 + 2ax2-3a2x, so f (x) = - 13x3 + 2ax2-3a2x. (2) as we know, G (x) = 2x3 + 3ax2-12a2x + 3a3, let g '(x) = 0 & # 8658; X = a or x = - 2A, if a > 0 & # 8658; if x = a > 0 & # 8658



How to convert Mu and square meter?


1 mu = 60 square feet, 1 mu = 666.6 square meters



The front view and the left view are circles inscribed with squares. What is the top view? What is the solid figure?
In the three views, the front view and the left view are circles inscribed with squares, and all are solid lines without dotted lines. What is the top view? What is a stereogram?


1. The top view is round, and the stereogram is a cylinder with equal height and equal bottom!
2. The top view is a square, the stereo view is a cube!



What is the analytical formula of the parabola obtained by y = 2x & # 178; + x-3 moving to the right by a quarter of the unit length?
Y = 2x & # 178; + x-3 this parabola, right translation quarter unit length
I wrote this: y = 2 (x-1 / 4) &# 178; + (x-1 / 4) - 3, that is, y = 2x & # 178; - x-3
Why is it wrong?
That is, where to reduce one quarter must be written down


y=2x²+x-3
=2(x-1/4)²+(x-1/4)-3
=2(x²-1/2x+1/16)+x-1/4-3
=2x²-x+1/8+x-1/4-3
=2x²-1/8-3
=2x²-25/8



How many tons is one cubic meter of coal


See what products? Raw coal 0.9-1.0 clean coal 0.85-0.9 medium coal 1.2-1.4 gangue 1.8 slime 1.3