Respuesta :

dalendrk
[tex]x^2+3x=10\\x^2+3x-10=0\\x^2+5x-2x-10=0\\x(x+5)-2(x+5)=0\\(x+5)(x-2)=0\iff x+5=0\ or\ x-2=0\\\\\boxed{x=-5\ or\ x=2}[/tex]