Posted by bob on Wednesday, October 7, 2009 at 3:55pm.
I think you mean
(12-8)(7-4)^3
Just checking, because an extra bracket around like ((12-8)(7-4))^3 would give a different answer.
Brackets first.
Then powers or roots.
Then multiply or divide.
Then add or subtract.
First do the arithmetic inside the brackets:
(4)(3)^3
Now evaluate the power. What is 3^3? That's 3*3*3. Now multiply that snswer by 4, and you're done.
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