Evaluating expressions with variables: exponents
2:41
Khan AcademySal Khan,Monterey Institute for Technology and Education
Evaluating expressions with variables: exponents
In this math lesson, we learn to evaluate an algebraic expression with exponents by following the order of operations (PEMDAS). We substitute a given value for the variable, calculate exponents, perform multiplication, and finally, subtraction. By applying these steps, we successfully find the value of the expression.
Oct 18, 2013
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