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Completing the Square

Card 1 of 22

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?

A

It is half the coefficient of xxx.

B

It is the square of the coefficient of xxx.

C

It is equal to the coefficient of xxx.

D

It is twice the coefficient of xxx.

Card 1 of 22

Completing the Square Flashcards

  1. GCSE
  2. /Maths
  3. /Completing the Square

22 flashcards on OCR GCSE Maths Completing the Square: the key formulae, methods and definitions you need to recall for the written papers.

Flashcards