Knockout NEET May 2021 (One Month)
An exhaustive E-learning program for the complete preparation of NEET..
₹ 14000/-
₹ 6999/-
Buy Now
P(x) = ax3+bx2+x-6
As x+2 is factro so P(-2) =0
P(-2) = a(-2)3+b(-2)2-2-6=0
-8a+4b=8...(i)
P(2) = 4
P(2) = a(2)3+b(2)2+2-6=4
8a +4b =8..(ii)
Equation (i) + Equation(ii)
8b=16
b=2
So, a=0