Simplify .
Answer and explanation
Correct answer: C.
- Step 1: Expand the top: .
- Step 2: Divide the numbers: .
- Step 3: Subtract the powers: .
Answer
.
Why not the others: adds the powers instead of subtracting, forgets to divide 16 by 8, and forgets to divide the powers of .
Practise more Number, Surds, Indices and Bounds.
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