Question

(x + 1) (x² - x + 1) = ?
1. x³ + 1
2. x³ - 1
3. x³
4. x³ + x² + 1

Answer 1

Correct Answer - Option 1 : x³ + 1

Calculation:

⇒ ? = (x + 1) (x² - x + 1)

⇒ ? = (x³ - x² + x + x² - x + 1)

∴ ? = (x³ + 1)