Question

Evaluate the following expression using the values given:

Find -3a2 - b3 + 3c2 - 2b3 if a = 2, b = -1, and c = 3.

Answer 1

Are any of those numbers powers, or just regular numbers?

Answer 2

I can do it

Answer 3

the ones after the variables are powers

Answer 4

-3(2)2 - (-1)3 + 3(3)2 - 2(-1)3

-6(2) + 3 + 9(2) +2(3)

-12 + 3 + 18+ 6

Answer 5

-9 + 24

Answer 6

Now i cant give direct answers so whats your answer

Answer 7

is it 15

Answer 8

\[-3(2)^2-(-1)^3+3(3)^2-2(-1)^3\]

Answer 9

yep

Answer 10

pemdas and all that

Answer 11

Medal and fan :)

Answer 12

thanks boo

Answer 13

@XxH2O_AvengerxX

it said the numbers after the variables are powers

Answer 14

ohhhh so there exponents??

Answer 15

yes

Answer 16

oh...lemme do it over real quick ok ? xD

Answer 17

ok

Answer 18

-6^2 - (-1)^3 +3(3)^2 + 2(-1)^3

Answer 19

yep

Answer 20

-12 + 3 + 9^2 + -2^3

-12 +3 + 81 - 8

9 + 73

Answer 21

is it 82

Answer 22

@XxH2O_AvengerxX

you completely forgot about PEMDAS lol

Answer 23

exponents first, then multiplication

wanna try one more time?

Answer 24

im confused

Answer 25

-.- ugh fine

Answer 26

dtan why dont you try it then

Answer 27

-6^2 - (-1)^3 +3(3)^2 + 2(-1)^3

I GOT THIS

Answer 28

He started it first, I want him to finish it lol unless he can't do it, which I'm sure he acn

Answer 29

*can

Answer 30

wait @dtan5457 , so does -6^2 turn to 36? Doesnt it turn to a postitve?

Answer 31

\[-3(2)^2=-3(4)\]

Answer 32

like i said, exponents first

Answer 33

-6^2 is not part of the question but that would be -36.

(-6)^2=36

Answer 34

parenthesis make a difference

Answer 35

-6^2 - (-1)^3 +3(3)^2 + 2(-1)^3

36 + 3 + 3(9) + 2(3)

36 + 3 + 27 + 6

39 + 33

Answer 36

Is that it??? :(

Answer 37

no lol

Answer 38

Ugh!!!!! I'm done then

Answer 39

oh my goodness can someone help me please

Answer 40

\(\huge\frak\color{#FF1FF1}{Im~gonna~stick~to~L^a_T~^e_X}\)

Answer 41

\[-3(2)^2-(-1)^3+3(3)^2-2(-1)^3=-3(4)-(-1)+27+2\]

Answer 42

@XxH2O_AvengerxX
Do you see the mistake?

Answer 43

Yeah now i do.....

Answer 44

yeah, well i'm gonna medal you for effort regardless lol

Answer 45

@tempboo

I simplified it for you, now just do the basic operations

Answer 46

im still confused

Answer 47

\[−3(4)−(−1)+27+2\]
Solve this, all exponents are gone now, should be easy

Answer 48

its just a whole bunch of question marks u sent

Answer 49

refresh

Answer 50

is it 18

Answer 51

Yep..........