Question

X² + 7x = 0 ?????????????????????????​

Answer 1

Resposta:

x*(x+7)=0

x=0

x+7=0 ==>x=-7

Answer 2

$x^2+7x = 0\\x(x + 7) = 0\\\\x' = 0\\\\x+7 = 0\\x = -7\\x"=-7$