Question

(3x + 1)(2x + 5)
6x² + 17 + 5
6x² + 17 + 5x
6x² + 17x + 5
6x + 17x + 5

Explanation:

Step1: Apply FOIL method

Multiply First terms: $3x \times 2x = 6x^2$
Multiply Outer terms: $3x \times 5 = 15x$
Multiply Inner terms: $1 \times 2x = 2x$
Multiply Last terms: $1 \times 5 = 5$

Step2: Combine like terms

$6x^2 + 15x + 2x + 5 = 6x^2 + 17x + 5$

Answer:

C. $6x^2 + 17x + 5$