Question

Ade S.9 Factor linear expressions: area models ORL

Use the area model to factor 21c + 6d - 9.
First, find the terms of the factors. The factor on the left must be a whole number greater
than 1, and all coefficients must be integers.
21c
Now, write 21c + 6d - 9 in factored form.
6d
-9

Answer 1

To factor the expression 21c + 6d - 9 using the area model, find two numbers that multiply to give 21 and add up to give 6. Rewrite the expression as (3c - 1)(7c + 1).

Step-by-step explanation:

To factor the expression 21c + 6d - 9 using the area model, we need to find two numbers that multiply to give 21 and add up to give 6. These numbers are 3 and 7. Now we can rewrite the expression as (3c - 1)(7c + 1).

Learn more about Factoring linear expressions using the area model