Question

What is the solution to the equation?

Answer 1

@welshfella @tylermcmullen23 @iGreen @amistre64 @MARC_ @triciaal @MrNood

Answer 2

the third will not work...lets just see what the others equal...

Answer 3

@horsegirl325
Try to do this yourself:

FIRST subtract 4 from each side of the equation

Second divide the new equation both sides by 2

Answer 4

i tried b and d.. and they equal 68

Answer 5

so b and d are correct?

Answer 6

no. in order for them to be correct, they have to equal 20

Answer 7

ill figure it out. give me a minute

Answer 8

place the answers in for x.. youll get whether they = 20 or not

Answer 9

OR
do it the correct way by starting using the methods I suggested above:

FIRST subtract 4 from each side of the equation

Second divide the new equation both sides by 2

Answer 10

none of them

Answer 11

that works better^

Answer 12

there is an answer, @horsegirl325

Answer 13

whats the answer?

Answer 14

The answer is DO SOME WORK YOUSELF

the method is above

Answer 15

I NEED HELP!!!!!!!

Answer 16

what is 20-4/2?

Answer 17

YOu got help
you NEED to do some thing yourself:

FIRST subtract 4 from each side of the equation

post the new equation HERE

Answer 18

of which one?

Answer 19

@tylermcmullen23
you mean (20-4)/2

Answer 20

well, yes

Answer 21

2x^2+4=20

subtract 4 from BOTH sides of that eqution and post the NEW equation here

Answer 22

=8

Answer 23

not =8

Answer 24

8

Answer 25

not =8

Answer 26

ok what equals 8???

Answer 27

(20-4)/2

Answer 28

ok so what are you left with? from the original equation???

Answer 29

finding the answer!!!!!

Answer 30

@horsegirl325

please can we take a step back a minute.

Please hold on - forget your original question and please answer this:

can you tell me what the 2 values for
\[\sqrt{4}\]
are?

If you cannot - then I don't think oyu can answer this question

Answer 31

what do you mean ????

Answer 32

youre not lying @MrNood
"If you cannot - then I don't think oyu can answer this question"

Answer 33

what 2 numbers multiply together to equal 4?

Answer 34

it equals 2

Answer 35

I asked for 2 values - can oyu give me the other one?

Answer 36

gj

Answer 37

2 and 2????

Answer 38

OK - I really believe you are not ready to answer this question.

You need to go back to your lesson on square roots and revise that first

I'm afraid I cannot help here any further

Answer 39

Well I thought that this site was for helping?

Answer 40

Nobody could 'help' me do quantum physics because I do not have the background skills and this site cannot teach me them.

You need to revise your skills in squareroots - there is no way to answer this question yourself if oyu do not know what the 2 squareoots of 4 are

Answer 41

I never asking u for help ever again

Answer 42

ok you said that (20-4)/2=8 right?
next!
you are left with x^2=8.
which of the answers (squared) equals 8??

Answer 43

2.8

Answer 44

@tylermcmullen23 is that right?

Answer 45

2.8284..... yes. thats what x should equal. which one of your answers = 2.8284.....

Answer 46

well none of them equal that...it would have to be 2/2

Answer 47

\[2\sqrt{2}\]

Answer 48

@tylermcmullen23 is that correct?

Answer 49

that is one of them, yes.

Answer 50

so maybe the ? mark one is one of them

Answer 51

\[-2 \sqrt2\]

Answer 52

what next??

Answer 53

the one that is blocked with the question mark has to be one

Answer 54

so positive 2/2 is not 1?

Answer 55

yes, it is. both of them are

Answer 56

so the 2/8 and -2/8 are wrong?

Answer 57

yep

Answer 58

thank you tyler, some people can be total jerks...

Answer 59

@horsegirl325
I have no interest in your opinion of me, although abuse like that is likely to get you suspended. I will not report it.

I commend @tylermcmullen23 for sticking with this to the bitter end, although it seems to me that he may as well have given you the answer at the beginning.

EVERY SINGLE conceptual step was done by him, and even in the end he worked backwards from the answer instead of working THROUGH the process TO the answer.
Your later posts show that you were still unable to make a contribution when the answer was written out for you.

I contend that you learned nothing from this exercise, and have just ticked a box on your test.

Here is another question which is IDENTICAL in the steps required

2x^2 + 4 = 66

answers:

x= 4 sqrt(3)
x= -4 sqrt (2)
x= 16 sqrt(2)

IF you can begin to approach this using the concepts that were explained above, then the exercise was worthwhile

Answer 60

@MrNood , i commend you for your effort and knowledge.