Question

Find the factors of the expression 3x² – 5x – 8.

• A. (x + 1) and (3x + 8)
• B. (x + 1) and (3x – 8)
• C. (x – 1) and (3x + 8)
• D. (x – 1) and (3x – 8)

Answer 1

Answer:

B. (x + 1) and (3x – 8)

Solution:

Given:

3x² – 5x – 8

Calculation:

3x² – 8x + 3x – 8

⇒ x(3x - 8) + 1(3x - 8)

⇒ (x + 1)(3x - 8)