Algebra

Question 1

How do you expand double brackets? For example: (x+9) (x-6)

Answer 1

To expand double brackets you use foil. First, outer, inner, last.

Question 2

How do you expand single bracket algebra? For example: 3(x+6)

Answer 2

Times the number on the outside of the brackets by the first number / letter then times it by the second and either add or subtract them.