Expanding Multiple Brackets

Question 1

What are double brackets also known as binomial expressions?

Answer 1

Writing two brackets next to each other means the brackets need to be multiplied together. For example, ( y + 2 ) ( y + 3 ) means ( y + 2 ) × ( y + 3 ) .

When expanding double brackets, every term in the first bracket has to be multiplied by every term in the second bracket.

Question 2

What are triple brackets also known as trinomial expressions?

Answer 2

Writing three brackets next to each other means the brackets need to be multiplied together. For example, ( y + 2 ) ( y + 3 ) ( x - 6 ) means ( y + 2 ) × ( y + 3 ) × ( x - 6 ).

Expanding triple brackets is just an extension of expanding single and double brackets.

When expanding double brackets, every term in the first bracket has to be multiplied by every term in the second bracket. Then every term in the third bracket needs to be multiplied by each term from the previous answer.