Question 38

R is a positive number. It is multiplied by 8 and then squared. The square is now divided by 4 and the square root is taken. The result of the square root is Q. What is the value of Q?

Solution

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We have R 
When multiplied by 8 we get 8R 
Now taking square we get $$64R^2$$
Dividing by 4 we get $$16R^2$$
Taking square root we get 4R

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