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4. A method of writing numbers as the product of their factors or divisors.
5. An expression in which the highest power of the variable is always 1.
9. A symbol that doesn't have a fixed value.
10. Are those terms whose variables and their exponents are different from each other.
11. A ratio that compares two quantities with different units.
12. Are terms that have the same variables and powers.
14. an equality of ratios. a:b=c:d is a proportion, also represented as a/b = c/d.
16. Two quantities are said to be in inverse proportion if an increase in one leads to a drcrease in the other or vice versa.
17. A fixed numerical value.

1. The relation between two quantities of the same kind. If a and b are two quantities then a/b is called the ratio of a to b and is also written as a:b.
2. The reverse of Factorization.
3. An expression in which the highest power of the variable is 2.
6. It is the constant value of the ratio between two propositional quantities. When two variables are directly or indirectly proportional to each other, then their relationship can be described as y = kx or y= k/x, where k determines how the two variables are related to one another.
7. A number that is multiplied by a variable in an expression.
8. Two quantities are directly proportional if an increase in one quantity corresponds to a constant increase in the other quantity, or if a decrease in one quantity corresponds to a constant decrease in the other quantity.
13. A combination of terms that ate combined by using the mathematical operations such as subtractions, additions, multiplication and division.
15. Can be a single constant, a single variable, or a combination of a variable and a constant combined with multiplication or division.