# How do you write  x^2 – 3x – 4 in factored form?

$\left(x + 1\right) \left(x - 4\right)$
${x}^{2} - 3 x - 4$
${x}^{2} - 4 x + x - 4$
$x \left(x - 4\right) + 1 \left(x - 4\right)$
$\left(x + 1\right) \left(x - 4\right)$