What is ?
Answer and explanation
Correct answer: A.
- Step 1: Take each root separately: and . Step 2. Add: . **Answer: . Why not the others:** A root of a sum is not the sum of the roots, so the option is wrong.
Practise more Algebra, Functions, Geometry, Combinatorics and Probability.
Free questions with an explanation for every one, and full timed Érettségi (Matura Hungary) mock tests.