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GCSE Maths questions...need help!!! watch

1. Could someone please help me??? Ok, the first one if pretty easy, but i just can't figure it out :
Draw the graph of y=X3(superscipt errors???)+2...i've done that...
Now use your graph to find an estimate of the solution of the equation X3+2=0 and x3+2=8
And...by drawing a suitable straight line on the grid, find estimates of the solutions of the equation x3-4x+2=0
Ummm im confused, can somebody tell me what i did to do? I tried looking it up in a book, but i couldnt find anything useful!
the second question is about circle theorems:
I found that one of them is 23 degrees, but i need to find ABD...and i can't! (the answer should be 65-do you find it though???)
2. ummm there's supposed to be an attachment...where is it?
3. ohhh it appears that the file was too large...but it's just a simple picture i did in paint....
how do you attach pictures???????
4. (Original post by lovely_girl)
ummm there's supposed to be an attachment...where is it?
did u remember to upload it after you browsed for it??
5. For the first bit you have y = x^3 + 2, thats fine.
Now when they say "find an estimate to the soluton of x^3 + 2= 0
all you do is substitue your value for y, (i.e. x^3 +2) = so basically that means it's y=0. So what you do is on your graph you draw the line, though you probably dont have to anyway, y=0. and where the original line hits that y=0 line, thats your estimate(s)

For the second bit, x3+2=8 same concept,
you substitute, your x^3 +2 which is y, into that equation, so it becoems y=8 and so again you draw the line, y=8
and same thing, you read off where the original line hits y=8 and read off your estimate(s). Hope thats right.
6. nothing is working....i can't attach the picture
7. (Original post by lovely_girl)
ohhh it appears that the file was too large...but it's just a simple picture i did in paint....
how do you attach pictures???????
There's a button called "Manage Attachments" a bit below the area where you type in your post. A window comes up, You browse your hard disc for the file, select it, go back to the window, then upoload it from there.
8. (Original post by jamal1425)
For the first bit you have y = x^3 + 2, thats fine.
Now when they say "find an estimate to the soluton of x^3 + 2= 0
all you do is substitue your value for y, (i.e. x^3 +2) = so basically that means it's y=0. So what you do is on your graph you draw the line, though you probably dont have to anyway, y=0. and where the original line hits that y=0 line, thats your estimate(s)

For the second bit, x3+2=8 same concept,
you substitute, your x^3 +2 which is y, into that equation, so it becoems y=8 and so again you draw the line, y=8
and same thing, you read off where the original line hits y=8 and read off your estimate(s). Hope thats right.
ohh, thanks!
9. (Original post by Fermat)
There's a button called "Manage Attachments" a bit below the area where you type in your post. A window comes up, You browse your hard disc for the file, select it, go back to the window, then upoload it from there.
yeah, but it says it's too large...and it's a small file...so if -that's- too large, what can you attach?!?!?
10. (Original post by lovely_girl)
yeah, but it says it's too large...and it's a small file...so if -that's- too large, what can you attach?!?!?
What you'll have to do then is go into paint again and save your image as a jpeg, so it has a smaller file size, although the image will turn out kind of jagged and blurry.
11. I hope this works!
Attached Images

12. yay! Thanks for the advice!(I feel stupid now, lol)
Erm...i know it's not a v. good picture...but i tried
13. Angle ABD I think is to do with the Alternate segment theorem.
And because ABD is on a semi circle, and angles at a semi circle are 90,
it's 90-25 (25 being the alternate angle) so <ABD = 65 degrees.
14. what paper is ur question from, i recognise the pic
15. thank you for the help!
i think it's edexcel 2002 non calc
16. if you have adobe then you should be able to view the solutions for that paper which ive attached
Attached Images
17. Paper 5 Summer 2002 1.0.pdf (36.9 KB, 352 views)
18. ohh thank you! I have the answers, but I don't have the explanations...thanks!

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