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# Factorizing with Inspection Method Homework Answers Needed

1 Select the correct answer. When using the inspection method, which number would you add to (and subtract from ) the constant term of the numerator in this expression so the polynomial in the numerator will have (x+4) as a factor? (x^(2)+7x+15)/(x+4) A. 3 B. 4 C. 7 D. 12 Reset Next

# Step By Step Answers with Explanation

To find the correct number to add to and subtract from the constant term of the numerator in the expression (x^2 + 7x + 15)/(x + 4) so that the polynomial in the numerator has (x + 4) as a factor using the inspection method, we need to perform the following steps:

The factors of 15 are: 1, 3, 5, and 15.

We need to find two numbers from these factors that add up to 7. The pair of numbers that satisfies this condition is 5 and 3 because 5 + 3 = 8.

Now factor out the greatest common factor (GCF) from each pair:

x(x + 5) + 3(x + 5) = 0

Solve for x in each equation:

For x + 5 = 0: x = -5

(x^2 + 7x + 15 + 4 - 4)/(x + 4)

Now, you can simplify:

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