-5^9 ; (5^3)^-2 <---- Neither of these is equal to 1/(5^9)
3^5 * 3^2; 3^20/3^2 <--- Neither of these is equal to 3^10
4*x; x^-4/x^8 <---- Neither of these is (always) equal to x^4
0 <--- This is the only value not equal to 1, the value of 8^0
Place a dot on the 0 spot and draw an arrow facing to the right. The dot must not be filled in. This shows that x>0 because the arrow and dot show the numbers that x can be.
