F(x)=−x2+8 and g(x)=−2x3+10x−1

Question

What is/are the approximate solution(s) of the system of f(x) and G(x)?
A(1.89,4.44)
B: (1,7)
c: (0.76,7.43)
d: (−1.5,5.75)
e: (−2.39,2.31)
f: (−2.83,16.01)

it is multiple choice

Answer 1

substitute the choices into the equations to find the solutions