Question

How can solve this??

Answer 1

`x^2-2x-3=0\\\\a=1;\ b=-2;\ c=-3\\\\x=(-(-2)\pm√((-2)^2-4(1)(-3)))/(2(1))\\\\\boxed{x=(2\pm√((-2)^2-4(1)(-3)))/(2(1))}\to\text{first answer}`