Lesson 9. Multiplying out brackets (2)

EXAMPLE:

Expand

means

a × b add a × c

= ab + ac

EXAMPLE:

Multiply out

means

p × 2q subtract p × 3

= 2pq – 3p

EXAMPLE:

Expand

means

n × n add n × 2

= n² + 2n

EXAMPLE:

Expand

means

5n × 2n add 5n × 3

= 10 n² + 15n

EXAMPLE:

Expand

means

–a × a and –a × b

= –a ² – ab

EXAMPLE:

Multiply out

means

–b × b and –b × –c

= –b² + bc 

Lesson 9

•  Test 1 
•  Test 2
•  Test 3