Difference of two squares | Maths | Quizalize & Oak National Academy

Starter quiz

A zero pair is __________.
- a pair of values which sum to one
- a pair of values which sum to zero ✓
- a pair of values which multiply to one
- a pair of values which multiply to zero
- a pair of values with a difference of zero
Use this area model to help you find the correct expansion of $(x + 3)(x + 9)$ .
- $x ^2 + 6x + 27$
- $x^2 + 9x + 3x$
- $x^2 + 9x + 27$
- $x^2 + 12x + 12$
- $x^2 + 12x + 27$ ✓
Use this area model to help you find the correct expansion of $(x - 5)(x - 11)$ .
- $x^2 - 16x - 55$
- $x^2 - 16x + 55$ ✓
- $x^2 - 6x - 55$
- $x^2 - 6x + 55$
- $x^2 + 16x - 55$
Fill in the missing value in this simplified expansion: $(x +8)(x - 3)\equiv x^2 +$ ______ $x - 24$ .
- '5' ✓
Which is the correct expanded form of $(x - 6)^2$ ?
- $x^2 - 36$
- $x^2 + 36$
- $x^2 - 12x + 36$ ✓
- $x^2 - 12x - 36$
- $x^2 + 12x - 36$
Match each product of two binomials to its correct expansion.
- $(x+3)(x+2)$
  
  ⇔
  
  $x^2 + 5x + 6$ ✓
- $(x+3)(x-2)$
  
  ⇔
  
  $x^2 + x - 6$ ✓
- $(x+2)(x-3)$
  
  ⇔
  
  $x^2 - x - 6$ ✓
- $(x-2)(x-3)$
  
  ⇔
  
  $x^2 - 5x + 6$ ✓
- $(x - 6)(x + 1)$
  
  ⇔
  
  $x^2 - 5x - 6$ ✓
- $(x + 6)(x -1)$
  
  ⇔
  
  $x^2 + 5x - 6$ ✓