Simplify .

Answer and explanation

Correct answer: A. 4

  1. Step 1: and . Step 2. The sum is . Answer: 4. Why not the others: 3: That multiplies the logarithms. 625: That is the product of the numbers, not the logarithm of it. 2: That subtracts the logarithms.

Practise more Surds, indices and logarithms.

Free questions with an explanation for every one, and full timed Singapore GCE O-Level mock tests.

All Surds, indices and logarithms questionsTake a mock test

More Surds, indices and logarithms questions

Simplify log 5 5 + log 5 125. | Singapore GCE O-Level