Mathematics for IGCSE & O level - Equations (Section 7 - No. 9)

The expression x² + 10x + 25 can be written as:

(x + 5)²

(x - 5)²

(x + 10)(x + 15)

(x + 5)(x - 5)

Giải thích

This is a perfect square trinomial: (x+5)² = x² + 10x + 25

Bình luận (0)

Quảng cáo