# What is the standard form of y= (x + 10)(x – 4) ?

Jan 6, 2016

${x}^{2} + 6 x - 40$

#### Explanation:

to obtain the standard form multiply the brackets out

x(x - 4 ) + 10 (x - 4 )

$= {x}^{2} - 4 x + 10 x - 40$

$= {x}^{2} + 6 x - 40$