# EXPRESS X1^3+X2^3 IN TERMS OF THE COEFFICIENTS OF THE EQUATION

### Cite this page as follows:

"Which is the value of the sum x1^3 + x2^3 if x1,x2 are solutions of the equation x^2-5x+6=0"*idstore.vn Editorial*, 7 Aug. 2010, https://www.idstore.vn/homework-help/which-value-sum-x1-3-x2-3-x1-x2-solutions-equation-188641.Accessed 25 Dec. 2022.

Bạn đang xem: Express x1^3+x2^3 in terms of the coefficients of the equation

**Who are the experts?**Our certified Educators are real professors, teachers, and scholars who use their academic expertise to tackle your toughest questions. Educators go through a rigorous application process, and every answer they submit is reviewed by our in-house editorial team.

f(x) = x^2 - 5x + 6

x1 & x2 are solution

We need to lớn determine the value of x1^3 + x2^3

From viete"s rule, we know that:

x1+ x2 = -b/a = 5.........(1)

x1*x2 = c/a = 6...........(2)

But f(x1) = f(x2) =0

Multiply 3 by x1 and (4) by x2

Add both equations:

= 5<(x1+x2)^2 - 2x1*x2> - 6(x1+x2)

= 5(5^2) - 5(2*6) - 6(5)

= 125 - 60 - 30

=125 - 90 = 35

Approved by idstore.vn Editorial Team

### Ask a tutor

Ask a tutorAssignment Type

Choose a reason Homework assignment Exam preparation Essay/thesis outline

Hover for more information.

Let us know your assignment type and we"ll make sure khổng lồ get you exactly the kind of answer you need.

Xem thêm: Văn Mẫu Nghị Luận: Ôi! Sống Đẹp Là Thế Nào, Hỡi Bạn ? Nghị Luận Ôi! Sống Đẹp Là Thế Nào, Hỡi Bạn

Submit Question

Try out our Essay Lab!

With our Essay Lab, you can create a customized outline within seconds to get started on your essay right away.

Xem thêm: Phân Tích Vẻ Đẹp Hung Bạo Của Sông Đà, Top 9 Bài Siêu Hay

icon-close

Start Your Essay

### Related Questions

See all

## Popular Questions

Browse AllMath

Latest answer posted September 07, 2010 at 12:47:25 PM

What vì chưng the letters R, Q, N, & Z mean in math?

14 Educator answers

Math

Latest answer posted November 14, 2011 at 5:49:28 AM

Solve for b2:A= 1/2h (b1+b2)

1 Educator answer

Math

Latest answer posted October 03, 2011 at 2:12:01 PM

This limit represents the derivative of some function f at some number a. State this f và a. Lim h->0 <(4th root of)(16+h)-2>/h a=? f=?

1 Educator answer

Math

Latest answer posted August 17, 2010 at 8:49:11 AM

Given f(x) and g(x), please find (fog)(X) & (gof)(x)f(x) = 2x g(x) = x+3

8 Educator answers

Math

Latest answer posted February 25, năm nhâm thìn at 6:48:45 PM

How long will your trip take (in hours) if you travel 350 km at an average tốc độ of 80 kmhr? What is the formula with givens: Time, Distance, speed or Velocity?

1 Educator answer

idstore.vn will help you with any book or any question. Our summaries và analyses are written by experts, & your questions are answered by real teachers. Join idstore.vn

Apply khổng lồ be an Educator

### Recommended

### More

©2022 idstore.vn, Inc. All Rights Reserved