If and are the roots of , what is ?

Answer and explanation

Correct answer: A. 29

  1. Step 1: Sum , product , so .
Answer
29.
Why not the others: 9: squares the sum only. -11: adds instead of subtracting. -3: gives the sum of roots.

Practise more Calculus, functions and statistics.

Free questions with an explanation for every one, and full timed NSW HSC mock tests.