Hi, I think that the answer to this question (11) is b) because
x=0. Doesn't the choice (b) include 0?
11) All real solutions of the equation 4*+³ - 4* = 63 belong to the interval: a) (-1,0,) b) (0, 1) c) (1, 2) d) (2, 4) e) none of the answers above is correct