Question

Which of the following are the coordinates of the roots of `x^2 + 4x = 0`?

Answer 1

Lets factorise and find the conditions when `y=0`

Explanation:

`x^2+4x=x*(x+4)=0`
This is true if either of the factors `=0`

So `x=0orx=-4`
graph{x^2+4x [-10, 10, -5, 5]}