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Lesson 7:
For all equations:
If the equation has one solution, enter that answer.
If
there is no solution to the equation, enter “none”.
If all real numbers are solutions to the equation except for those value(s) that make the denominators
zero, enter
1,.
..
xa
For example, in #4, we get equations that look like
14
2
1
8
4
xx
(this is
called an
“
identity,
”
because we get the same thing on both sides after cross-multiplication) and
thus all real numbers are solutions except for any number that makes any denominator zero (in this
case,
1
2
). Enter this type of answer on the computer as
1
2
x
.
If there are two values for which
the denominator will be zero, enter as
1
2
x
or as
11
,
22
.
The plus/minus option is
listed under the “log” menu.
Do NOT enter as
,
x
.
Cengage Now cannot accept this format.
#1:

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