Factor by Grouping
Factor by Grouping
The Equal Test
It is possible to use a TI 83/84 calculator to check if the factoring is correct. In order to do this, follow these steps:
Step 1. On the home screen, enter the original equation.
Step 2. Push the 2ND key and then the TEST key, then press #1 and ENTER to put an "=" sign in.
Step 3. Put in the factored form after the "=" and press ENTER.
Step 4. If the result is 1, the two expressions are equivalent. You have factored correctly! If the result is 0, the factored form is incorrect.
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