Resposta:
Explicação passo-a-passo:
a) 3x² - 4x = 0
→ x × (3x - 4) = 0
→ x = 0 ....(i)
→ 3x - 4 = 0 ....(ii)
(ii).
→ 3x - 4 = 0
→ 3x = 0 + 4
→ 3x = 4
→ x = 4/3
HP = {0 , 4/3}
b) 5x² + 10x = 0
→ 5x × (x + 2) = 0
→ x × (x + 2) = 0
→ x = 0 ....(i)
→ x + 2 = 0 ....(ii)
(ii).
→ x + 2 = 0
→ x = 0 - 2
→ x = -2
HP = {-2 , 0}
