SOLUTION: What expression raised to the fourth power is 81x12y8z16?

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 Question 75504: What expression raised to the fourth power is 81x12y8z16?Answer by bucky(2189)   (Show Source): You can put this solution on YOUR website!Take the one-forth power of . When you do you can write this as: . . This can be "expanded" by raising each of the 4 factors to the power to get: . . You can use a calculator (or you may be able to figure out) that the 4th root of 81 is either plus 3 or minus 3. For each of the other factors you can follow the power rule and multiply the exponent of the term by . When you do that you get: . . and . . and, finally . . When you multiply all four of these results together you get: . and . and those two are the answers to the problem. You can check by multiplying both the answers times themselves 4 times (four factors multiplied together) and see if you don't get back to the original expression.