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Home > A2C > Chapter 1 > Lesson 1.1.2 > Problem 1-26


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

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

Notice that the binomial is being multiplied by .

Use the distributive property correctly and continue solving.

The error is in line .
It should be not .

Continue solving to get .

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

Result should be .