ATAR Notes: Forum

HSC Stuff => HSC Maths Stuff => HSC Subjects + Help => HSC Mathematics Extension 2 => Topic started by: Aaron Lillis on February 27, 2019, 07:12:27 am

Title: Past hsc polynomials question
Post by: Aaron Lillis on February 27, 2019, 07:12:27 am: Could someone please help me with part ii of this question ;D ;D
Title: Re: Past hsc polynomials question
Post by: fun_jirachi on February 27, 2019, 05:08:36 pm: $\text{For this question, you can use geometric series.} \\ P(a)=1+a^2+a^4=0 \\ \frac{(a^2)^3-1}{a^2-1} = 0 \\ a^6-1=0 \\ a^6=1$

Hope this helps :)