Algebra
expressions don't have an equal sign and equations do
variables
a verbal expressions is a math questions .for example 8+6
If you replace variables in an expression by numbers (in case there are any variables) and then do the indicated operations, you get a number. That final number is the "value" of the expression.
Algebra.
It depends on the edition, but typically, it would include, working with expressions that include variables - for example, adding, subtracting, multiplying, and dividing such expressions; fractions (also with expressions); writing equations (based on word problems) and solving those equations; factoring polynomials; graphing; perhaps some basic trigonometry. - High school algebra is all about working with variables.
It depends on how far you are on Pre-algebra. If you don't know anything, I recommend you take Pre-algebra 1. If you are advanced in Pre-algebra and you know variables and expressions then I recommend you take Pre-algebra 2
Yes. Expressions cannot be expressed without variables. There are numerical expressions for ex. 2 + 3 is an expression without variables.
Algebra
The algebra taught in high school involves doing calculations with unknown or unspecified numbers. These are usually represented with letters, which are called "variables". For more details, read some introductory article about algebra, such as the Wikipedia (article "Elementary algebra"), or read a high school textbook about algebra if you want more details.
expressions don't have an equal sign and equations do
juxtaposition - one may place two variables or expressions next to each other and imply an operator. e.g. a times b can be written ab.
Basically the same way that you evaluate other types of expressions with variables: * You replace the variables by the value assigned to the variables. * Then you do the specified calculations.
a verbal expressions is a math questions .for example 8+6
Dissimilar terms on algebra are the expressions that doesn't have the same factors (variables) or powers of the factors. (exponent)Examples:4x + 5b - 2a(43)(52) - 4a + 7z
variables