# How do you multiply (x+19)(x-19)?

Jun 28, 2016

${x}^{2}$ - 361

#### Explanation:

Start with the first set of brackets.
So $x$ times the the other $x$ = ${x}^{2}$
Then that same $x$ (from the first set) times -19 = -19$x$
Then 19 times the $x$ (from the second set) = 19$x$
Then that 19 times -19 = -361

Add it all up equals to ${x}^{2}$ + 19$x$ - 19$x$ -361
or in other words... ${x}^{2}$ - 361.