In the expansion (x+r)2=x2+2rx+r2(x+r)^2 = x^2 + 2rx + r^2(x+r)2=x2+2rx+r2, how is the number inside the bracket (rrr) related to the xxx coefficient?
It is twice the coefficient of xxx.
It is half the coefficient of xxx.
It is the square of the coefficient of xxx.
It is equal to the coefficient of xxx.
Flashcards for OCR GCSE Maths Completing the Square, covering the key formulae, methods and definitions you need to recall for the written papers. 22 cards, matched to the OCR GCSE Maths (J560) specification.
