MYTUTOR SUBJECT ANSWERS

619 views

When the polynomial 3x^3 +ax+ b is divided by x−2 , the remainder is 2, and when divided by x +1 , it is 5. Find the value of a and the value of b.

Insert the negative values of the divisors and put them into the polynomial. x-2 -> P(2) = 3*4+2a+b=2   x+1 -> P(-1)=3*(-1)+(-1)a+b=5.  22+2a+b=0 -8-a+b=0, then solve the simultaneous equations and obtain the answer: a=-10, b=-2.

Egidijus S. IB Computing tutor, IB Maths tutor

1 year ago

Answered by Egidijus, an IB Maths tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

23 SUBJECT SPECIALISTS

£22 /hr

Jonas P.

Degree: MPhys Theoretical Physics (Bachelors) - Edinburgh University

Subjects offered: Maths, Physics

Maths
Physics

“I am currently a student at the University of Edinburgh, doing my 4th year of the MPhys Theoretical Physics programme. I've managed to score an average grade of 81% in year 3, and I tend to consistently do well in my exams, which I be...”

£30 /hr

Chris S.

Degree: Mathematics (Bachelors) - Bristol University

Subjects offered: Maths, Spanish+ 1 more

Maths
Spanish
Further Mathematics

“ I am extremely passionate about mathematics and I love the Spanish language! ”

£20 /hr

Guy P.

Degree: Mathematics (Masters) - Warwick University

Subjects offered: Maths, Further Mathematics + 2 more

Maths
Further Mathematics
.STEP.
.MAT.

“About:Hi. I am a 2nd Year Mathematics student at the University of Warwick. I achieved a comfortable First in Year 1 and have continued this trend into my second year. Even from an early age, I have had a burning passion to engage m...”

About the author

£20 /hr

Egidijus S.

Degree: Informatics MInf (Masters) - Edinburgh University

Subjects offered: Maths, Computing

Maths
Computing

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Posts by Egidijus

Add the binary numbers 100101 and 101001 and convert them to decimal (they are unsigned integers). What are possible issues when adding the numbers?

Name several sort algorithms of an array, their working principles and their efficency.

Name the memories in the computer and rate them by the amount of space and their price. When should which be used.

Show that the following system of equations has an infinite number of solutions. x+y+2z = -2; 3x-y+14z=6; x+2y=-5

Other IB Maths questions

Show that the following system of equations has an infinite number of solutions. x+y+2z = -2; 3x-y+14z=6; x+2y=-5

What does differentiation actually mean?

Why is (-1)*(-1)=1?

An arithmetic sequence has third term 56 and 15th term 92. What is the common difference and the first term?

View IB Maths tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok