# What is the standard form of y= (x+1)(4x-5) ?

May 27, 2016

The standard form of a polynomial function is obtained by multiplying everything with everything.

#### Explanation:

Use FOIL to help out.

First: $x \times 4 x$

Outside: $x \times - 5$

Inside: $1 \times 4 x$

Outside: $1 \times - 5$

Therefore, $y = 4 {x}^{2} - x - 5$

Hopefully this helps!