Grade 11Algebra
1.X2+x+1=0
X2013+2013x2010 =?
2 Sum of values of a for which (x+a)(2013+x)+1 is a perfect square
In a triangle ABC, if inradius=1, circumradius=3, semi perimeter=5 then,
a2+b2+c2 /12 =?
4) let (x) be a polynomial of degree five with leading coefficient 252 .
if f(2)=3, f(3)=8, f(4)=15,f(5)=24,f(6)=35 then f(1)/252=?
5) in a triangle ABC a=5 b=4 c=3. G is the centroid of triangle. circumradius of triangle GAB is
