If is one of the two linear factors of the expression , what is the other factor?
The product of the first term of each factor must equal . Since the first term of the known factor is , we know that the first term of the other factor must be , too.
The product of the second term of each factor must equal . Since the second term of the known factor is 5, we know that the second term of the other factor must be .
Therefore, the other factor is .
Multiply the factors to check your work.