Respuesta :
Answer:
x=2 , x = 6
Step-by-step explanation:
x² – 8x = 20 ⇌ x² – 2(4)x = 4 + 16 ⇌ x² – 2(4)x - 16 = 4 ⇌ (x - 4)² = 4
⇌ x - 4 = 2 or x - 4 = -2 ⇌ x = 6 or x = 2
Answer:
Step-by-step explanation:
x² – 8x = 20 ⇌ x² – 2(4)x = 4 + 16 ⇌ x² – 2(4)x - 16 = 4 ⇌ (x - 4)² = 4
⇌ x - 4 = 2 or x - 4 = -2 ⇌ x = 6 or x = 2
