# What is the standard form of  y= (x – 4)(x + 1) ?

Feb 22, 2016

${x}^{2} - 3 x - 4$
Have a look at how I split the multiplication!

#### Explanation:

Given:" "color(brown)(color(blue)((x-4))(x+1)

Write as$\text{ } \textcolor{b r o w n}{\textcolor{b l u e}{x} \left(x + 1\right) \textcolor{b l u e}{- 4} \left(x + 1\right)}$

${x}^{2} + x - 4 x - 4$

${x}^{2} - 3 x - 4$