# What is the standard form of y=(x+1)(x-3)?

Feb 27, 2016

$\textcolor{w h i t e}{\text{XXX}} y = {x}^{2} - 2 x - 3$

#### Explanation:

An expression is in polynomial standard form (and quadratics are a type of polynomial) requires that the terms be arranged in descending degree sequence.

Expanding the right side of the given equation:
$y = {x}^{2} - 2 x - 3$
color(white)("XXX")"degree"(x^2) = 2
color(white)("XXX")"degree"(-2x) = 1
and
color(white)("XXX")"degree"(-3)=0
this is in "standard form".