Answer and explanation

Correct answer: B.

  1. Step 1: Write , so . Step 2. Equal bases give equal exponents: , so . **Answer: . Why not the others:** forgets the , treats the exponent as a factor, and gives .

Practise more Mathematics for the Esame di Stato.

Free questions with an explanation for every one, and full timed Maturità / Esame di Stato (Italy) mock tests.