Q

29 Which expression is equivalent to (3/2 * p + 1)(1/2 * p + 3)
D 3/4 * p ^ 2 + 10p + 3
A 2p ^ 2 + 3
C 3/4 * p ^ 2 + 5p + 3
B 4p ^ 2 + 3
D

1 answer

To find the expression equivalent to \((\frac{3}{2} p + 1)(\frac{1}{2} p + 3)\), we need to perform the multiplication using the distributive property (also known as the FOIL method for binomials).

  1. First: Multiply the first terms: \[ \frac{3}{2} p \cdot \frac{1}{2} p = \frac{3}{4} p^2 \]

  2. Outer: Multiply the outer terms: \[ \frac{3}{2} p \cdot 3 = \frac{9}{2} p \]

  3. Inner: Multiply the inner terms: \[ 1 \cdot \frac{1}{2} p = \frac{1}{2} p \]

  4. Last: Multiply the last terms: \[ 1 \cdot 3 = 3 \]

Now, combine all these results together: \[ \frac{3}{4} p^2 + \frac{9}{2} p + \frac{1}{2} p + 3 \]

To combine the \(p\) terms, convert \(\frac{9}{2} p\) and \(\frac{1}{2} p\) to a common denominator: \[ \frac{9}{2} p + \frac{1}{2} p = \frac{10}{2} p = 5p \]

Now we can write our expression as: \[ \frac{3}{4} p^2 + 5p + 3 \]

Now, let's look at the answer choices:

  • A: \(2p^2 + 3\)
  • B: \(4p^2 + 3\)
  • C: \(3/4 p^2 + 5p + 3\)
  • D: \( \text{(not provided)} \)

The equivalent expression we derived is: \[ \frac{3}{4} p^2 + 5p + 3 \]

Thus, the correct choice is C: \(3/4 p^2 + 5p + 3\).