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TSI Mathematics Videos 144 videos

TSI Math: Writing the Slope-Intercept Equation of a Graphed Line
97 Views

What is the equation of the line graphed above?

TSI Math: Plugging in Slope and Point to Find the Equation of a Line
12 Views

A line passes through the point (-4, -4) and has a slope of . What is its equation?

TSI Math: Using Intercepts to Find the Slope of a Line
5 Views

Line A has an x-intercept of -4 and a y-intercept of 8. What is its slope?

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TSI Math: Identifying Perfect Cube Factors 3 Views


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Description:

Simplify.


Transcript

00:01

Okay sy mash bumpers uh here's Another one for you

00:05

what's the cube root of forty Okay well it's another

00:11

classic situation The question cackles and evil glee throwing us

00:15

a doozy like this Thank you Root of forty and

00:17

expects us to spend all day finding a number that

00:20

equals forty Wynant's multiplied by itself three times Yeah well

00:22

the answer choice is always out Tio foil the questions

00:26

Plans whisper another secret Hey we all contain a cube

00:30

root So there's no hole number That equals forty when

00:34

it's cubed look for perfect cube factors of forty instead

00:39

Yeah That's How all these questions talking like a moron

00:42

All right well don't mind if we do We follow

00:44

the road here The factor pairs of forty are ten

00:47

and four five and eight two and twenty And of

00:49

the factors listed well eight is the only perfect cube

00:53

right to tend to tend to so used a factor

00:55

Pair of eight and five to rewrite Forty When we

00:58

get to cuba to forty is the cube root of

01:00

eight times five which is equivalent to the cube root

01:03

of eight multiplied by the cube root of five And

01:06

well we know the cube root of eight There is

01:09

to so we just multiply right Took two times cuba

01:13

to five That's a simplified form of the cube root

01:16

there and hopefully fall for neither trick questions they threw

01:20

at you That's it forty is two times cuba to

01:22

five and the answer is a and we're done We're

01:25

shmoop

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