Question

Simplify: (3x – 1) (x3 + 2x + 1)

Answer 1

Answer:

$3x^4-x^3+6x^2+x-1$

Step-by-step explanation:

Distribute parentheses:

$3xx^3 + 3x * 2x + 3x * 1 + (-1)x^3 + (-1) * 2x + (-1) * 1$

Add minus and plus rules:

$3x^3x + 3 * 2xx + 3 * 1 * x - 1 * x^3 - 1 * 2x - 1 * 1$

Simplify:

$3x^4-x^3+6x^2+x-1$

Answer 2

Answer:

B: 3x4-x3+6x2+x-1