True or false:
4. 2(25)2 5 25
5. |4 2 6| 5 |4| 2 |6|
6. 9 2 2(2)(210) 5 7(2)(210) 5 2140
We will assume that you have a scientific or graphing calculator. Discussions of some
of the capabilities of graphing calculators and graphing utilities will be found throughout
the text.
Most scientific and graphing calculators use standard algebraic order when evaluating
arithmetic expressions. Working outward from inner parentheses, calculations are performed
from left to right. Powers and roots are evaluated first, followed by multiplications
and divisions, and then additions and subtractions.