Double brackets (OCR GCSE Maths): Flashcards

Quadratic expression

First, Outer, Inner, Last

Multiply first terms in each bracket

Multiply outer terms

Multiply inner terms

Multiply last terms in each bracket

Signs in front of numbers ($+$, $-$)

Square of first term in each bracket

Adding products of outer and inner terms

Product of last terms in each bracket

$a^2-14a+49$ (not $a^2-49$, missing middle term)

Multiplying it by itself