Question 26599
suppose the coeffients of the equation F(x)=ax^3+bx^2+cx+d=0 satisfy the equation a + b + c + d = 0. Name a zero of the equation F(x)
THIS INDICATES THAT WHEN WE PUT X=1 IN F(X) WE GET ZER0.SINCE 
F(1)=A*1^3+B*1^2+C*1+D=A+B+C+D=0...
HENCE X=1 IS A ZERO OF THE FUNCTION.