Question
Factor the trinomial completely. \[ p^{2}-12 p+35 \]
Ask by Mcdonald Estrada. in the United States
Jan 24,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
\[ p^{2} - 12p + 35 = (p - 5)(p - 7) \]
Solution
To factor the trinomial \( p^{2} - 12p + 35 \) completely, follow these steps:
### Step 1: Identify the Coefficients
The given quadratic trinomial is in the form:
\[ p^{2} + bp + c \]
where:
- \( b = -12 \)
- \( c = 35 \)
### Step 2: Find Two Numbers That Multiply to \( c \) and Add to \( b \)
We need to find two numbers, let's call them \( m \) and \( n \), such that:
\[ m \times n = c = 35 \]
\[ m + n = b = -12 \]
Let's list the pairs of factors of 35:
- \( 1 \) and \( 35 \)
- \( 5 \) and \( 7 \)
Since the constant term \( c \) is positive and the middle term \( b \) is negative, both numbers \( m \) and \( n \) must be negative.
Check the pair \( -5 \) and \( -7 \):
- \( -5 \times -7 = 35 \) ✅
- \( -5 + (-7) = -12 \) ✅
### Step 3: Write the Factored Form
Using the numbers \( -5 \) and \( -7 \), the trinomial can be factored as:
\[ p^{2} - 12p + 35 = (p - 5)(p - 7) \]
### Verification
To ensure the factorization is correct, expand the factored form:
\[
(p - 5)(p - 7) = p \times p + p \times (-7) + (-5) \times p + (-5) \times (-7) \\
= p^{2} - 7p - 5p + 35 \\
= p^{2} - 12p + 35
\]
The expanded form matches the original trinomial, confirming that the factorization is correct.
### Final Answer
\[ p^{2} - 12p + 35 = (p - 5)(p - 7) \]
Reviewed and approved by the UpStudy tutoring team
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Mind Expander
To factor the trinomial \( p^{2} - 12p + 35 \), we need to find two numbers that multiply to 35 (the constant term) and add up to -12 (the coefficient of the middle term, p). The numbers that meet these criteria are -5 and -7 since: - \(-5 \times -7 = 35\) - \(-5 + -7 = -12\) Thus, we can express the trinomial as: \[ (p - 5)(p - 7) \] So the completely factored form of the trinomial \( p^{2} - 12p + 35 \) is: \[ (p - 5)(p - 7) \]