Surds and Indices Practice Test 1

Question : 5 of 40

Marks: +1, -0

(16)^{-3/4 }+ 2^{-3} + (8)^{-2/3}

is equivalent to:

Solution:

(16)^{-3/4 }+ 2^{-3} + (8)^{-2/3}

=1/(16)^{ 3/4 }+ 1/2^{ 3} +1/ (8)^{ 2/3}

=1/2^3+1/2^3+1/2^2

=1/8+1/8+1/4=1/2

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