8x{[(7+4)x2] - [(11-7)x4]}

For this case we have the following expression:

8x {[(7 + 4) x ^ 2] - [(11-7) x ^ 4]}

First, we solve the parentheses:

8x {[(11) x ^ 2] - [(4) x ^ 4]}

We now resolve the brackets:

8x {[11x ^ 2] - [4x ^ 4]}

We now solve the keys:

8x {11x ^ 2 - 4x ^ 4}

We apply the distributive property:

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.