(- 1 / 2) ^ - 3 + (- 1 / 3) ^ - 2 - (- 1 / 5) ^ - 1

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• 1. Division of the same base power. X power of 3 = 1 / 81 [find the value of x] - 0.00000215 = - 2.15 * 10 [find the value of x]
• 2. 3 times 0.4 equals 1.2, and 3 is a factor of 1.2
• 3. A problem of division of the same base power Given that the x power of 128 is 8 × 2 to the 11th power, find the value of (x-1) to the power of 2008
• 4. Division of the power of the same base in Mathematics (3 / 2) times are 0 + (- 1) times are 3 + (3 / 1) times are - 3 / absolute value - 3
• 5. On the division of the same base power If x power of 2 = 3 and Y power of 4 = 5, then x-2y power of 2 is? It's better to take the process and be accurate,
• 6. On the division of the same base power 1. The speed of light is about 3 times 10 km / s. if the distance between the earth and the sun is 1.5 times 10 km / s, how long does it take for the sun to reach the earth? 2. A city has put forward the goal of today's economic development to about one million citizens of the city: "more than 10 billion, strive for a well-off life. What is the per capita target? 3. Fold a piece of paper with a thickness of 0.1 mm in half for 20 times. How many times of the thickness of 128 pieces of the same paper?
• 7. Three division problems of the same base power 1. If 2 (X-2) ^ 0 is meaningful, then x_________ 2. Given 10 ^ m = 3 and 10 ^ n = 2, find the value of 10 ^ 2m-n 3. Given 3 ^ 2m = 6 and 9 ^ n = 8, find the value of 3 ^ 6m-4n
• 8. Mathematics is the same as the division of base power. It is required to write out the whole process The negative third power of (2Ab & # 178;) / (the negative first power of 2A & # 178; b) &# 178;
• 9. There are several expressions for quadratic inclusions
• 10. On the equation of X: (A-2) \ \ (X-2) + (A-2) \ \ (2-x), there are innumerable solutions. For the value of a, please write the steps, 3Q
• 11. In deriving the formula for calculating the volume of a cylinder, Xiao Hua divided the 8 cm high cylinder into 32 parts It is known that the surface area of the cuboid is 64 square centimeters larger than that of the original cylinder, and the radius of the bottom of the original cylinder is? Cm?
• 12. What method do we use to deduce the formula of cylinder volume?
• 13. The derivation of the volume formula of a cylinder is based on the mathematical idea of (). In this process, () has changed and () has not changed. The height of the assembled figure is equal to that of (), and their bottom area (), so the volume formula of a cylinder is ()
• 14. The area formula and derivation process of each figure I didn't want to give points, but there are many. If the answer is simple and correct, 10 points will be added Rectangles, squares, circles, triangles, trapezoids and other elementary school on the line, is a plane graphics. There is also a derivation process
• 15. What is the formula of side area, volume and bottom area of cylinder?
• 16. How to calculate the side area of a cylinder?
• 17. How did he derive the formula for the side area of a cylinder
• 18. What is the formula for calculating the side area of a cylinder
• 19. Application questions, there are several trapezoidal area formula derivation process, what are they?
• 20. Please write the derivation process of trapezoidal area formula