Respuesta :

gmany
x - intercepts → y = 0

[tex]y=12x+7x^2\to12x+7x^2=0\\\\x(12+7x)=0\iff x=0\ \vee\ 12+7x=0\\\\x=0\ \vee\ 7x=-12\\\\x=0\ \vee\ x=-\dfrac{12}{7}[/tex]

Answer: [tex]x=0;\ x=-\dfrac{12}{7}[/tex]