...Beauty, cleaning, DIY tips and more - free to join!
   Login   Contact us   Site map   Puzzle Club   Ask a question    Newsletter

Find a+b+c?

if (x+a)(x+b)(x+c)=xcube-9xsquare+23x-15,find a+b+c, 1/a+1/b+1/c
Question asked by: amaljay

Asked on: 09 Feb 2010

This is too complicated for me but maybe one of the maths experts around here can solve it!

I think the key is to understand how to be able to re-arrange algebraic equations correctly.

It is worth getting someone good at maths to explain the method to you as once you've learned it you can apply it in every case.

By: knowitall
Replied at: 21 Feb 2010
Rate Answer
Comment or provide your answer to this question

Comments and other answers:

Solve th brackets compare the values of x** x* x you wil get ab+c=-9 abc=15 abc+ab=23 now solve the equations you will get youe answers
By: dynamic

Date of comment: Mon, Jun 28th 2010

Ask a New Question

Find out more about Maths

Maths Questions and Answers

algebra Questions and Answers

Next question: how can be demostrated that affine transformations transform lines in lines?


Become a Member! It's Free >>>

Share on Facebook: On Twitter: TwitterTweet this!

Question Keywords

abc  

More Questions:

2 Power 56 When Divided By 17 Leaves A Remainder Of?
Prove That The Paralellogram Circumscibing A Circle Is Rhombus?
Prove That The Triangle Formed Is Right Angled Isosceles For This Particular Condition Of Its Angles: SinA.sinB.sinC+cosA.cosB=1 Where A,B,C Are The Angles Of The Triangle.
Find The Area Of The Region Included Between The Circle: X2 + Y2 + 2 X + 10y + 27 = 0 And The Parabola Y2 + 10y – X + 23 = 0 Find The Area Of The Region Included Between The Circle: X2 + Y2 + 2 X + 10y + 27 = 0
Let Y= F(x) And Y=g(x) Be The Pair Of Curves Such That ( I ) The Tangents At Point With Equal Abcissae Intersect On Y-axis. ( Ii ) The Normals At Point With Equal Abcissae Intersect At X-axis. ( Iii ) One Curve Passes Through (1,1) And The Other One P