What are the roots of x^2 - 5x + 6 = 0?

  1. x = 2, 3
  2. x = -2, -3
  3. x = 1, 6
  4. x = -1, 6
Answer

A) x = 2, 3

Factorise: x^2-5x+6=(x-2)(x-3)=0, so x=2 or x=3. Check with the quadratic formula: x= 5pm 25-242= 5pm12

Mathematics MCQ · More Algebra MCQs · Practise