What is the value of ?
Answer and explanation
Correct answer: D. 27
- Step 1: Apply the exponent quotient rule for identical bases with base .
- Step 2: Subtract the powers in the numerator and denominator: .
- Step 3: Compute the resulting power: .
Answer
27.
Why not the others: 9 is (off by 1 in exponent); 243 is ; 28 is an off-by-one arithmetic error; 54 doubles 27.
Practise more Powers and roots.
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