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:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )