In the proof of (x - 3)^2 + 5 = x^2 - 6x + 14, the first step is:

  1. (x - 3)^2 = x^2 - 9
  2. x^2 - 6x + 14 = (x - 3)^2
  3. (x - 3)^2 = x^2 + 9
  4. (x - 3)^2 = x^2 - 6x + 9
Answer

D) (x - 3)^2 = x^2 - 6x + 9

Expand the square, then add 5: x^2 - 6x + 9 + 5 = x^2 - 6x + 14. SLO M-09-B-15 · Knowledge

Mathematics MCQ · More Logic MCQs · Practise