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Vocabulary Video

algebra and symbols in algebra are like
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a foreign language they all mean
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something and can be translated back and
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forth here are a few symbols you should
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know an expression is any combination of
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values and operations that can be used
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to show how things belong together and
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compare to one another here's an example
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of an expression a term such as for X Y
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is a grouping of one or more factors
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which could be variables numbers or both
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multiplication is the only thing
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connecting the number with the variables
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addition and subtraction on the other
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hand separate terms from one another for
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example this expression has three terms
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an equation uses a sign to show a
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relationship that two things are equal
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by using an equation tough problems are
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reduced to easier problems and simpler
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answers an operation is an action
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performed upon one or two numbers to
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produce a resulting number operations
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are addition subtraction multiplication
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division square roots and so on a
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variable is a letter that always
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represents a number but it varies until
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it's written in either an equation or
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inequality that's a comparison of two
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values then the fate of the variable is
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set it can be solved for and its value
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becomes the solution of the equation a
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constant is a value or number that never
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changes in an equation it's constantly
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the same the number 5 is a constant
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because it is what it is a variable can
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be constant if it is assigned a definite
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value usually a variable representing a
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constant is one of the first letters in
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the alphabet so in the equation ax
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squared plus bx plus c equals zero a b
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and c are constants and the X is the
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variable the value of x depends on what
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a B and C are assigned to be an exponent
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is a small number written slightly above
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and to the right of a variable or number
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such as 2 in the expression 3 squared
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it's used to show repeated
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multiplication an exponent is also
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called the power of the value
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to simplify means to combine all that
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can be combined cut down on the number
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of terms and put in an
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easy-to-understand form to factor means
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to change two or more terms to just one
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term and to solve means to find the
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answer in algebra it means to figure out
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what the variable stands for
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you

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