SOLUTION: What is the value of 2x to the 2nd power minus z to the 2nd power?

Question 783229: What is the value of 2x to the 2nd power minus z to the 2nd power?
Answer by josgarithmetic(39613) (Show Source): You can put this solution on YOUR website!
You described an expression and asked for the value of it. You need the variable assignments or you have no value for the expression. is an expression only.

If you had x=12 and z=8, then substitute these values for them and evaluate.
which you can simplify.
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