134k views
23 votes
Can someone explain this?

Can someone explain this?-example-1
User SObr
by
6.7k points

1 Answer

3 votes
Whenever you go to check your answer since x can only be greater than -7 you have to use a number bigger than -7 to make sure the solution is correct.
User Varun Suresh Kumar
by
6.7k points