# How do you use PEMDAS to simplify 1 - 2 + 2^2 ?

Apr 17, 2018

$3$

#### Explanation:

$1 - 2 + {2}^{2}$

$\therefore = 1 - 2 + \left(2 \times 2\right)$

$\therefore = 1 - 2 + 4$

$\therefore = - 1 + 4$

$\therefore = 3$