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Mathematics and Statistics Assessment Videos 200 videos

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Description:

Evaluate the expression 2(n + 1)³ – m when m = -4 and n = 1.


Transcript

00:01

All right last up in this siri's Evaluate the expression

00:04

two times Quantity and plus one of the third bunnies

00:06

em when m is negative foreign and is one Shmoop

00:15

so the problem looks cryptic but we don't need hirable

00:19

ifixit translated the values for eminent or given we only

00:22

need a small pick axe and a little subs tomb

00:25

to shin here A substitution Yeah all right Well starting

00:29

by substituting or replacing the variables em with negative foreign

00:32

and with one And we gotta avoid sign errors and

00:35

potentially getting chased by an angry mummy We're going to

00:38

the values for emine and in parentheses here So we

00:41

got two times quantity and plus one of the third

00:43

month it's m we've got two times the quantity one

00:48

there plus one of the third reich So no negative

00:50

signs They're two messes up and then we're gonna go

00:52

minus a negative for sim ply using the order of

00:55

operations We start with thie in tombs side here inside

00:59

of the parentheses So we're going to get the one

01:01

plus one there Well that's an easy two and then

01:04

we're going toe Subtract the negative four there So let's

01:07

go cuba fei the two there and that gets us

01:10

eight so that's two times eight minus the negative for

01:14

or plus of four And remember the hierarchy of operations

01:19

Here multiplication is then followed by subtraction right So change

01:22

the subtraction of a negative value to addition to avoid

01:25

triggering any large rolling boulders meant to crush violators Yeah

01:29

indiana jones We're big fans anyway so that's it We

01:32

get sixteen plus four and it's twenty while the treasure

01:35

is the value of twenty nine it's Exciting is the

01:38

mummy jules We thought we'd get but that's it it's 00:01:40.685 --> [endTime] d twenty

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