How do you evaluate variable expressions that have exponents?
How do you evaluate 2x^3 and -4x^2 when x = -3?
What does 3x^2 + 2xy^2 - 4y^2 equal when x = -2 and y = -5?
What are the two ways of finding the value of a variable expression?
Why does order of operations matter when evaluating a variable expression?
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This is a slightly more advanced exponent lesson in which variable expressions are evaluated for different values of variables. Negative values of variables are used and parentheses are shown to be very important when evaluating a negative number to an exponent. Several rather complicated examples are evaluated and explained step by step.