Question 7 If p(x) = x + 3 , then p(x) + p(-x) is equal to A) 3 B) 2x C) 0 D) 6
The answer is D. Given p(x) = x +3 , put x = -x in the given equation,
We get, p (-x) = -x+3
Now, p(x) + p(-x) = x + 3 + (-x) + 3 = 6
For the equation 3x2+ px + 3 =0, p > 0 is one of the root is square of the other, then p is equal to