K KingDuckX New Member Joined Sep 18, 2018 Messages 1 Gender Male HSC 2019 Sep 18, 2018 #1 if n is a positive whole number & any value of x will work: (a+x)^n =3b + 6bx + 5bx^2...... find: a, b and n Last edited: Sep 18, 2018
if n is a positive whole number & any value of x will work: (a+x)^n =3b + 6bx + 5bx^2...... find: a, b and n
J jyu Member Joined Nov 14, 2005 Messages 623 Gender Male HSC 2006 Sep 18, 2018 #2 a^n=3b, na^(n-1)=6b, 0.5n(n-1)a^(n-2)=5b a=3, b=243, n=6
