Find the area of this question plz help I will mark brainiest and give pints

128 km²

Step-by-step explanation:

a²+b²=c²

So, one of the sides equals 128 square rooted, because 8²=64, and 64 times 2 equals 128. The area of a square is side times side, so it's side². So, instead of simplifying the square root of 128, get rid of the square root. The answer is 128 km²

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

step-by-step explanation: