Question

Find a polynomial for the perimeter and for the area. There is a box with d+2 on top and on the right side there is a d. Need the perimeter, and the area.

Answer 1

so lets say a,b,c are the sides than a=b=d+2 and c=d+2?

Answer 2

i wrote d+2 twice :)

Answer 3

the box has area a*b*c

Answer 4

and perimeter: 2ab+2ac+2bc

Answer 5

I honestly don't know how to do it this is what the question was.

Answer 6

thank you

Answer 7

hey can I ask you something?

Answer 8

you have to put d+2 instead of a,b and d instead of c

Answer 9

so area will be (d+2)^2*d=d^3+4d^2+4d

Answer 10

perimeter is 2(d+2)(d+2) +4d(d+2)

Answer 11

if I understood the question correctly, the phrasing is pretty bad

Answer 12

Is that after simplifing the answer?

Answer 13

which one?

Answer 14

both the perimeter and the area have to be simpfly not factor.

Answer 15

2(d+2)(d+2) +4d(d+2)=2d^2+8d+8+4d^2+8d=6d^2+16d+8

Answer 16

thank you
can you do my other sample i have too?

Answer 17

can you do it? I guess this is some kind of homework :-)
I can help but I wont solve it for you.

Answer 18

\[\sqrt[20]{(-9)^{20}}\]

Answer 19

ok. sounds good to me.

Answer 20

is that 30sqrt(-9)^20 ?
not really visible

Answer 21

20sqrt(-9)^20

Answer 22

oh ok!

Answer 23

what is ur guess?

Answer 24

6.088

Answer 25

how did you get that? :)

Answer 26

i times -9 20 times and then i divied it by 20

Answer 27

oh I see, but here this is not multiplication or division

Answer 28

what does 2^4 mean?

Answer 29

the 4 is the root of 2?

Answer 30

would be 8

Answer 31

nope, 2 to the power of 4 means that you take 2*2*2*2 (4times)=16

Answer 32

so (-9)^20=-9*-9*-9..... (20 times)

Answer 33

now what does \[\sqrt{?}\] mean?

Answer 34

it is the inverse operation so lets say \[\sqrt[3]{8}\]

Answer 35

that means the number that you multiply by itself 3 times and you will get 8

Answer 36

when you multiply -9 20 times you don't get a good answer

Answer 37

you get a horrid number, really big one

Answer 38

but now we have 20sqrt(-9)^20

Answer 39

what is the number that you multiply by itself 20 times to get (-9)^20?

Answer 40

(-9)^20 means -9 multiplied by itself 20 times

Answer 41

i know what i get when u multiply -9. 20 times. u get 282042115992

Answer 42

I guess you counted that in your head :-)

Answer 43

no used my phone.

Answer 44

you do not need the exact value to solve the problem

Answer 45

the answer is:
what is the number that you multiply by itself 20 times to get (-9)^20?
(-9)^20 means -9 multiplied by itself 20 times

it is -9

Answer 46

but that is not the good answer as the correct one is 9
can you see why?

Answer 47

by the way, I suggest not using calculator for studying maths, unless there is some horrid calculation.