Mathematics for IGCSE & O level - Equations (Section 2 - No. 22)
Which of the following is a suitable example for using factorization?
x² + 2x + 1 = 0
x³ + 2x + 1 = 0
x² + 2x + 3 = 0
x² + 3x + 5 = 0
Объяснение
Factorization is applicable here since it's possible to find two numbers that add up to 2 and multiply to 1.