Question

pfv
1)encontre as raízes das equações
a) x(x+5)=16+5x​

Answer 1

a) x(x+5) = 16 + 5x

x² + 5x = 16 + 5x

x² + 5x - 5x - 16

x² - 16 = 0

x² = 0 + 16

x² = 16

x = √16

x = ± 4

S = {- 4 , + 4}