I have being doing an old maths test paper to practise and i have done most of it but i am struggling with these last few Q's and i just cnt figure then out! its stressing me out! lol Any help will be much appricated thnx
1) I need to make C the subject of this formula... P= C
2) We have practised doing algebracic long division, and from x^3+3x+k divided by x-1,it has a reminder of 6. But from this how can i find k?
3)finally, a circle intersepts the line with equation x+y=3 at 2 points, A and B. How can i algebraically find the coordinates of A and B.
and also show that the distance AB is squareroot 162
Thank you!! to everyone that helps!
PC + 4P = C
4P = C - CP
4P = C(1 - P)
And we are told that
So x = 6 or x = -3
Set those values back into the circle's equation to find the corresponding y-values.
When you have those, use the distance formula to find the length of AB.