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How do I solve (16)^(3/4)? I keep getting it wrong in WAEC past papers.
Good question! This is a fractional index — one of WAEC's favourite trick spots. Here's how to nail it every time: Step 1: split the fraction. (16)^(3/4) = (16^(1/4))^3. Step 2: find the 4th root. ⁴√16 = 2. Step 3: cube it. 2³ = 8. The key: always do the root first, then the power.