Questions: Find two consecutive odd integers such that their product is 63 more than 6 times their sum
Select the correct choice below and fill in the answer box(es) to complete your choice. (Use a comma to separate answers as needed.) A. There is only one solution. The consecutive odd integers are B. There are two solutions. The smaller consecutive odd integers are , and the larger consecutive odd integers are ?
Transcript text: Find two consecutive odd integers such that their product is 63 more than 6 times their sum
Select the correct choice below and fill in the answer box(es) to complete your choice.
(Use a comma to separate answers as needed.)
A. There is only one solution. The consecutive odd integers are $\square$
B. There are two solutions. The smaller consecutive odd integers are $\square$ , and the larger consecutive odd integers are $\square$ ?
Solution
Solution Steps
To solve this problem, we need to find two consecutive odd integers, which we can represent as \( x \) and \( x+2 \). The problem states that their product is 63 more than 6 times their sum. We can set up an equation based on this condition and solve for \( x \).
Express the sum of the integers: \( x + (x + 2) = 2x + 2 \).
Express 6 times their sum: \( 6(2x + 2) = 12x + 12 \).
Set up the equation for the product: \( x(x + 2) = 12x + 12 + 63 \).
Simplify and solve the quadratic equation to find the value of \( x \).
Calculate the two consecutive odd integers using the value of \( x \).
Step 1: Define the Consecutive Odd Integers
Let the two consecutive odd integers be \( x \) and \( x+2 \).
Step 2: Set Up the Equation
According to the problem, the product of these integers is 63 more than 6 times their sum. Therefore, we can write the equation as:
\[
x(x + 2) = 6(x + x + 2) + 63
\]
Simplifying the right side, we have:
\[
x(x + 2) = 12x + 12 + 63
\]
\[
x(x + 2) = 12x + 75
\]
Step 3: Solve the Quadratic Equation
Rearrange the equation to form a standard quadratic equation:
\[
x^2 + 2x = 12x + 75
\]
\[
x^2 - 10x - 75 = 0
\]
Solving this quadratic equation, we find the solutions:
\[
x = -5 \quad \text{or} \quad x = 15
\]
Step 4: Determine the Consecutive Odd Integers
For \( x = -5 \), the consecutive odd integers are \(-5\) and \(-3\).
For \( x = 15 \), the consecutive odd integers are \(15\) and \(17\).
Final Answer
B. There are two solutions. The smaller consecutive odd integers are \(-5, -3\), and the larger consecutive odd integers are \(15, 17\).