If 1 is a zero of the polynomial P(a) = x2a2 - 2xa + 3x - 2 . Then x = ___________
2, 1
-1, -2
2, -1
-2, 1
If one zero of polynomial f(x) = (k2 + 4)x2 + 13x + 4k is reciprocal of the other, then k =
______ satisfies the equation 3x+4y=2.