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

Jul 2, 2015

Lets factorise and find the conditions when $y = 0$
${x}^{2} + 4 x = x \cdot \left(x + 4\right) = 0$
This is true if either of the factors $= 0$
So $x = 0 \mathmr{and} x = - 4$