To solve the problem, we will apply the Remainder Theorem, which states that the remainder of a polynomial \( P(x) \) when divided by \( (x - a) \) is equal to \( P(a) \).
### Step 1: Find \( p \) applying the concept of the Remainder Theorem.
Given the polynomial:
\[
P(x) = p x^3 + (p + 3)x^2 - 9x + 30
\]
We need to find \( p \) such that \( P(2) = P(-3) \).
**Calculate \( P(2) \):**
\[
P(2) = p(2)^3 + (p + 3)(2)^2 - 9(2) + 30
\]
\[
= p(8) + (p + 3)(4) - 18 + 30
\]
\[
= 8p + 4p + 12 - 18 + 30
\]
\[
= 12p + 24
\]
**Calculate \( P(-3) \):**
\[
P(-3) = p(-3)^3 + (p + 3)(-3)^2 - 9(-3) + 30
\]
\[
= p(-27) + (p + 3)(9) + 27 + 30
\]
\[
= -27p + 9p + 27 + 27 + 30
\]
\[
= -18p + 84
\]
**Set \( P(2) = P(-3) \):**
\[
12p + 24 = -18p + 84
\]
Combine like terms:
\[
12p + 18p = 84 - 24
\]
\[
30p = 60
\]
\[
p = 2
\]
### Step 2: Using the value of \( p \) from question number 1, simplify \( P(x) \).
Substituting \( p = 2 \) into \( P(x) \):
\[
P(x) = 2x^3 + (2 + 3)x^2 - 9x + 30
\]
\[
= 2x^3 + 5x^2 - 9x + 30
\]
### Step 3: How many face masks will be given to Maria Aurora National High School?
To find the total number of face masks, we can evaluate \( P(x) \) at a specific value of \( x \). Since the problem does not specify a value for \( x \), we can evaluate \( P(1) \) as an example:
\[
P(1) = 2(1)^3 + 5(1)^2 - 9(1) + 30
\]
\[
= 2 + 5 - 9 + 30
\]
\[
= 28
\]
Thus, if \( x = 1 \), Maria Aurora National High School will receive **28 face masks**.
### Step 4: Check your answer using long division and synthetic division methods.
**Synthetic Division:**
We can check the polynomial \( P(x) = 2x^3 + 5x^2 - 9x + 30 \) for \( x = 2 \) and \( x = -3 \).
1. **For \( x = 2 \):**
- Coefficients: \( 2, 5, -9, 30 \)
- Synthetic division with \( 2 \):
\[
\begin{array}{r|rrrr}
2 & 2 & 5 & -9 & 30 \\
& & 4 & 18 & 18 \\
\hline
& 2 & 9 & 9 & 48 \\
\end{array}
\]
Remainder = 48.
2. **For \( x = -3 \):**
- Coefficients: \( 2, 5, -9, 30 \)
- Synthetic division with \( -3 \):
\[
\begin{array}{r|rrrr}
-3 & 2 & 5 & -9 & 30 \\
& & -6 & 3 & 18 \\
\hline
& 2 & -1 & -6 & 48 \\
\end{array}
\]
Remainder = 48.
Both synthetic divisions yield the same remainder of 48, confirming that \( P(2) = P(-3) \).
Thus, the value of \( p \
The value of \( p \) that satisfies the condition is 2. The simplified polynomial \( P(x) \) is \( 2x^3 + 5x^2 - 9x + 30 \). If \( x = 1 \), Maria Aurora National High School will receive 28 face masks.