Question

x^2+9x=0
me ajudeeeeem​

Answer 1

Resposta:

(-9, 0)

Explicação passo-a-passo:

x² + 9x = 0

a = 1

b = 9

c = 0

x' = -b +- √ b² - 4ac/2

x' = -9 + √ 9² - 4*1*0/2

x' = -9 + √81 - 0/2

x' = -9 + 9/2

x' = 0

x'' = -b - √ b² - 4ac/2

x'' = -9 - √ 9² - 4*1*0/2

x'' = -9 - √81 - 0/2

x'' = -9 - 9/2

x'' = -18/2

x'' = -9