Question

Factorise :

Please include steps

Answer 1

\[2a ^{2} -32b ^{2}\]

Answer 2

you can start by dividing it by 2

Answer 3

what do you get when you do that?

Answer 4

a - 16b

Answer 5

no, sorry i should've said factor out a 2
so you'll get \[2(a ^{2}-16b ^{2})\]
you can factor out a 2 because they have 2 in common

Answer 6

think of *blank* times *blank* can give you 16?

Answer 7

4?

Answer 8

yes.. so now when you write you two sets of parenthesis down you know you will use a 4

Answer 9

how should the 2 set of parenthesis look?

Answer 10

and what should be in them?

Answer 11

2(a+4b)(a-4b)

Answer 12

yup