gan bisa bantu jawab gk?????

x² + 10x + 25 = 0
⇔ x² + 10x = -25
⇔ x² + 10x + (5)² = -25 + (5)²
⇔ (x + 5)² = -25 + 25
⇔ (x + 5)² = 0
⇔ x + 5 = √0
⇔ x + 5 = +- 0
⇔ x₁ = 5 ; x₂ = -5

∴ (-5, 5)