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

6251 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

The expansion of (1+x)^4 is 1 + 4x +nx^2 + 4x^3 + x^4. Find the value of n. Hence Find the integral of (1+√y)^4 between the values 1 and 0 (one top, zero bottom).


y = x^3 ln x. Find dy/dx


Find the coordinate of the stationary point on the curve y = 2x^2 + 4x - 5.


Express (5-√ 8)(1+√ (2)) in the form a+b√2 , where a and b are integers


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning