### Home > CCA2 > Chapter Ch1 > Lesson 1.1.2 > Problem 1-25

1-25.

Note: The stoplight icon to the right of a problem indicates that there is an error in the problem.

Find the error in the solution at right. Explain what the error is and solve the equation correctly. Show how to check your solution to be sure that it is correct.

Notice that the binomial

Use the Distributive Property correctly and continue solving.

The error is in line 2.

It should be

Continue solving to get .

Substitute in the original equation and simplify both sides to compare results.

Result should be