Simplify the expression. Write the answer with positive exponents. Assume all variables represent positive numbers. (x2z)1/4/x-1/2z1/2

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What is the value of this expression when r=2,s=1,and t =0?Explain your answer

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need help rewriting it

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Are there any quick ways to find two numbers that can both be multiplied and added to reach certain numbers? For example: If I wanted to find a number that multiplied to 14 and added to 9, I...

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98+(-54)-(-36.5)+(-44)