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imc

algebra junior

Problem

Assume that

x

is a positive real number. Which is equivalent to

3 x x

?

(A)

x^{1/6}

(B)

x^{1/4}

(C)

x^{3/8}

(D)

x^{1/2}

Solution

3 x x = 3 x^{3} = 6 x^{3} = x^{3/6} = x^{1/2} x^{1/2}

Final answer

D