To find the product of the polynomials \( (2x + 1)(x - 4) \), we can use the distributive property (also known as the FOIL method for binomials).
-
Multiply the first terms:
\( 2x \cdot x = 2x^2 \) -
Multiply the outer terms:
\( 2x \cdot (-4) = -8x \) -
Multiply the inner terms:
\( 1 \cdot x = 1x \) (or just \( x \)) -
Multiply the last terms:
\( 1 \cdot (-4) = -4 \)
Now, combine all these results together:
\[ 2x^2 - 8x + x - 4 \]
Combine like terms:
\[ 2x^2 - 7x - 4 \]
So, the product of the polynomials \( (2x + 1)(x - 4) \) is:
\[ 2x^2 - 7x - 4 \]
In the boxed format, we have:
\[ \Box 2, \Box -7, \Box -4 \]
Thus, your final answer is:
\[ \text{Box } 2 \quad \text{Box } -7 \quad \text{Box } -4 \]