Answer:1Step-by-step explanation:A number raised to the 3rd power is equal to that number multiplied by itself twice. Below I have expanded the expression to visualize this process. If this makes it more confusing, the main way is just to go from line 1 to line 4.9 + (-2)³                          <---- Original expression9 + (-2 x -2 x -2)             <---- (-2)³ expanded9 + (4 x -2)                     <---- -2 times -29 + (-8)                           <---- 4 x -21                                     <---- 9 - 8...

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