Expressions

Expression (3a-7).(3a+7) is identical with:



« Correct result


Wrong answer

Step-by-step explanation:

(3a7) (3a+7) = (3a)2  72=9a249



Help us improve the example. If you find a mistake, let us know. Thank you!







You need to know the following knowledge to solve this word math problem:

Related math problems and questions: