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Distinguish between expressions and equations algebraically by providing an example of an algebraic expression and an example of an algebraic equation

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x^3-2x is an algebraic expression.  Note that there is NO "=" sign here.

x^4 + 4x^2 + 4 = 0 is an algebraic equation.  Note the presence of an "=" sign.

algebraic expression always have an equal sign (=)

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