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Intermediate Algebra and Functions Videos 36 videos

TSI Math: Understanding Points of Intersection
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Two parabolas are graphed in the coordinate plane. Parabola A is a function, and parabola B is not a function. What is the maximum number of points...

TSI Math: Solving a Quadratic Equation for x
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What is x for the equation 2x² + 36 = -18x?

TSI Math: Finding a Line's x-Intercept Given a Point on that Line
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Which of the following points is a location where the function f(x) = -2x² + 12x + 54 crosses the horizontal axis?

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TSI Math: Handling Negative Signs When Evaluating an Expression 2 Views


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Description:

Evaluate the expression when p = -2.


Transcript

00:03

Okay sy mash bumpers Next up evaluate the expression Three

00:07

people us for over five plus p when p is

00:11

negative too The whistle blows Yep there it is time

00:17

for a substitution The variable peel it's worn out so

00:20

replace it with the given value of negative too to

00:22

avoid sign error penalties Yeah place the value in parentheses

00:26

it's always good discipline to do there so we're going

00:28

to go three times the quantity negative two plus four

00:31

and then five plus quantity negative too Best game plan

00:34

here's some five numerator and denominator separately in deal fraction

00:37

at the end and the numerator start with the multiplication

00:39

because multiplication outranks addition in the pen doss order of

00:42

operations member is a movie about that somewhere Alright so

00:45

it gives us negative six plus four and then denominator

00:49

Here is five plus thing to our five moneys to

00:52

sew on top we've got what is that negative too

00:55

and on the bottom Then we've got the three so

00:58

that's it so it's negative two thirds that's it it's

01:01

a slam dunk All right we came we shmoop upped 00:01:03.701 --> [endTime] We got the right answer

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