Question

Determine which consecutive integers do not have a real zero of f(x)=x²-4x²-4x+15 between them.

a. (4, 5)
C. (-2,-1)
b.
(1, 2)
d.
(-3,-2)

Answer 1

option

Explanation:

f(x)=-3x²-4x+15

if (-3,-2) is substitute

x=-3 x=-2 is substitute in above given equation we get real zero.