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# Help with this question please :)

1. Any help with question 4 would be much appreciated! How do you find the points of intersection?

Thanks
2. I wish u could say this to maths:

animeamanda1412 someone needs ur help
3. (Original post by tamil fever)
I wish u could say this to maths:

animeamanda1412 someone needs ur help
lmaoo, i can never say that
im always gonna be like "maths, forever saty a cute little baby so i can always solve your questions"

and yh, what do you need help with?
4. (Original post by JakeAntonyBrown)

Any help with question 4 would be much appreciated! How do you find the points of intersection?

Thanks
4a - solve for x (factorise) check it can be factorised with discriminant
4b - then put them into the equation of a straight line to find m or something like that
C1
5. (Original post by animeamanda1412)
lmaoo, i can never say that
im always gonna be like "maths, forever saty a cute little baby so i can always solve your questions"

and yh, what do you need help with?
It's question 4, how do you find the points of intersection?

Thanks
6. (Original post by tamil fever)
I wish u could say this to maths:

animeamanda1412 someone needs ur help

That's brilliant! I'd totally be saying that 90% of the time.
7. (Original post by CheeseIsVeg)
4a - solve for x (factorise) check it can be factorised with discriminant
4b - then put them into the equation of a straight line to find m or something like that
C1
Thanks! For 4a, how would I solve for x?

8. (Original post by JakeAntonyBrown)
Thanks! For 4a, how would I solve for x?

you solve for by letting y=0
as x is common factor in all the three terms, you factorise it out and you will end up with a quadratic equation which I think you can factorise.
hope this helps
9. (Original post by JakeAntonyBrown)
Thanks! For 4a, how would I solve for x?

You factorise.
Start by y=x^3-4x^2+3x
now what is common to all terms/what can you put outside the brackets?
10. (Original post by JakeAntonyBrown)
That's brilliant! I'd totally be saying that 90% of the time.
i say that 100% of the time.I've even written it in my tests
11. (Original post by CheeseIsVeg)
You factorise.
Start by y=x^3-4x^2+3x
now what is common to all terms/what can you put outside the brackets?
X is common in all?

12. (Original post by JakeAntonyBrown)
X is common in all?

yup so that gives:
y=x(x^2-4x+3)
Now this means one root x = 0 (when y= 0 ) Do you see how I got that?You have a quadratic to factorise now, I was hoping you could do that on your own to get the other two roots?
(x^2-4x+3)
Is this helping - I don't want to feed you answers without explanations if you see what I mean?
13. (Original post by CheeseIsVeg)
yup so that gives:
y=x(x^2-4x+3)
Now this means one root x = 0 (when y= 0 ) Do you see how I got that?You have a quadratic to factorise now, I was hoping you could do that on your own to get the other two roots?
(x^2-4x+3)
Is this helping - I don't want to feed you answers without explanations if you see what I mean?
I understand how we get to x(xˆ2-4x+3) but from there I'm lost.

Sorry
14. (Original post by JakeAntonyBrown)
I understand how we get to x(xˆ2-4x+3) but from there I'm lost.

Sorry
So y= x(xˆ2-4x+3) yep?Now if we seperate them into two parts, where the x intercepts are, y = 0
Therefore 0=x(xˆ2-4x+3)
Here you can find out that either x=0 (from the coefficient infront of the bracket)
or 0=(xˆ2-4x+3)

So you must factorise xˆ2-4x+3
Can you factorise or do you want to learn the Cheese way
15. tbh, these questions are my weak points in maths
but i'll give a method im not sure you'd like
my teacher taught me a quick way, but i could never grasp it, so i always draw the curve, its better
so draw the curve on a piece of paper and from there you can get values of A, B and C
16. (Original post by CheeseIsVeg)
So y= x(xˆ2-4x+3) yep?Now if we seperate them into two parts, where the x intercepts are, y = 0
Therefore 0=x(xˆ2-4x+3)
Here you can find out that either x=0 (from the coefficient infront of the bracket)
or 0=(xˆ2-4x+3)

So you must factorise xˆ2-4x+3
Can you factorise or do you want to learn the Cheese way
(x-3) (x-1)

I don't know where all my GCSE knowledge has gone, how did I manage to get an A* at GCSE and not know anything now?!? :P
17. (Original post by JakeAntonyBrown)
(x-3) (x-1)

I don't know where all my GCSE knowledge has gone, how did I manage to get an A* at GCSE and not know anything now?!? :P
yep you got it, so three roots are?
Are you good now? I've got to go and tackle C3 myself
Good on you Just do a bit of revision, should be fine
18. (Original post by CheeseIsVeg)
yep you got it, so three roots are?
Are you good now? I've got to go and tackle C3 myself
Good on you Just do a bit of revision, should be fine
+1
+3
and emmm???

Do you know what this topic would be called?

Thanks
19. (Original post by JakeAntonyBrown)
+1
+3
and emmm???

Do you know what this topic would be called?

Thanks
and x=0
20. (Original post by CheeseIsVeg)
and x=0
Thanks, how did you know x=0?

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