The document contains 29 math problems involving polynomial multiplication and division. Students are asked to calculate the products and quotients of polynomials such as (a3 - 3b), (-9x)(-12xy + 5), and (4mn)(5m2n + 6mn2). They are also asked to perform division of polynomials like 18x5 ÷ 9, (-13p5q3) ÷ (-13p2q), and (-15ab4 + 3a2b2 - 21b3) ÷ 3b2. The problems cover a range of operations with monomials and polynomials of varying degrees.
The document contains 29 math problems involving polynomial multiplication and division. Students are asked to calculate the products and quotients of polynomials such as (a3 - 3b), (-9x)(-12xy + 5), and (4mn)(5m2n + 6mn2). They are also asked to perform division of polynomials like 18x5 ÷ 9, (-13p5q3) ÷ (-13p2q), and (-15ab4 + 3a2b2 - 21b3) ÷ 3b2. The problems cover a range of operations with monomials and polynomials of varying degrees.
This document provides an overview of basic probability and statistics concepts. It covers variables, descriptive statistics like mean and standard deviation, frequency distributions through histograms, the normal distribution, linear regression, and includes a practice test in the appendices. Key topics are qualitative and quantitative data, parameters versus statistics, measures of central tendency and dispersion, and generating frequency tables and histograms from data sets.
19. จากอัตราส่วนของจํานวนหลายๆจํานวน
a : b : c เราสามารถเขียนอัตราส่วนของจํานวน
ทีละสองจํานวนได้เป็นa : b และ b : c
เมือ m แทนจํานวนใดๆ
จะได้ว่าa : b = am : bm
และ b : c = bm : cm
ดังนันa : b : c = am : bm : cm
เมือ m แทนจํานวนบวก