Show that (x-2) is a factor of 3x^3 -8x^2 +3x+2

The factor theorem states that a polynomial f(x) has a factor (x-k) if and only if f(k)=0. 
f(2) = 3(2)^3 - 8(2)^2 + 3(2) + 2 = 3(8) - 8(4) + 6 + 2 = 24 - 32 + 8 = 0.
==> (x-2) is a factor.

SO
Answered by Samantha O. Maths tutor

5373 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

A curve has the equation y=3x^3 - 7x^2+52. Find the area under the curve between x=2 and the y-axis.


If x is a real number, what are the solutions to the quadratic: 4*x^2- 4*x+1 = 0


How do you find the turning point of a parabola using its equation? using its equation?


A tank is filled with water up to the height H0. At the bottom of the tank, there is a tap which is opened at t=0. How does the height of liquid change with time?(Hint: dH/dt is proportional to -H)


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences