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Expressions and Equations Videos 18 videos

GED Math 3.5 Expression and Equations
2965 Views

GED Math: Expression and Equations Drill 3, Problem 5. Which part of the equation should be changed?

GED Math 2.1 Expressions and Equations
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In this GED math problem, figure out what fraction of Serena's monthly income is spent on groceries

GED Math 1.5 Expression and Equations
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In this GED math equation, figure out if the given expression requires a greater than, less than or equal sign for completion.

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GED Math 3.5 Expression and Equations 2965 Views


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Description:

GED Math: Expression and Equations Drill 3, Problem 5. Which part of the equation should be changed?

Language:
English Language

Transcript

00:00

Thank you We sneak in and here's your shmoop choose

00:05

your brought to you by problems involving positive and negative

00:09

signs Well we bet you're pregnant with anticipation Exactly One

00:15

of the positive or negative signs in the following equation

00:18

is incorrect changing I don't like the equation True which

00:22

one should be changed Here we go let's read x

00:25

squared months eight x minus fifteen equals quantity x minus

00:29

three times the quantity x minus five Okay so there

00:34

are four minus signs in the equation given and we're

00:36

told that exactly one of them is an imposter and

00:39

needs to be changed to a plus sign We've got

00:42

our people at the fbi on this one but so

00:44

far they've come up with nothing anyway Let's take a

00:46

look at the right half the equation for a if

00:48

we made either those signs positive we'd still get our

00:51

x square to me outside terms and come out to

00:53

negative fifteen which is good but we'd have either three

00:57

x minus five Acts or 5 x minus 3 x

01:01

and neither of those would get us to a negative

01:02

eight acts which is what shows up on the left

01:05

Hand side of the equation So no dice However if

01:08

we leave those signs alone then our outside terms are

01:11

going to result in a positive fifteen which is not

01:14

what we have going on here What does that tell

01:16

us Well it basically tells us that we need to

01:18

change the sign in front of the fifteen to a

01:21

plus sign and now everything works out just perfectly Our

01:24

imposter has been apprehended really the low brimmed hat shades 00:01:27.729 --> [endTime] should've thought

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