question\nexpress as a trinomial.\n$(x + 4)(3x - 1)$

Explanation:

Step1: Apply FOIL method

Multiply first terms, outer terms, inner terms, last terms: $x \cdot 3x + x \cdot (-1) + 4 \cdot 3x + 4 \cdot (-1)$

Step2: Calculate each product

$\frac{}{}$ $3x^2 - x + 12x - 4$

Step3: Combine like terms

$\frac{}{}$ $3x^2 + (-x + 12x) - 4 = 3x^2 + 11x - 4$

Answer:

$3x^2 + 11x - 4$