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

5151 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Differentiate y = (3x − 2)^4


Given that x = ln(sec(2y)) find dy/dx


y = (x^3)/3 - 4x^2 + 12x find the stationary points of the curve and determine their nature.


What are stationary points and how do I find them?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences