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Which is an example of an algebraic expression? 4(3 + 8) 18 to the second power 3 – a 21 • 4
3-a because this has a variable in it but not the others
In mathematics, an algebraic expression is an expression built up from constants, variables, and a finite number of algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number) source : wiki Hence 3a