What is the solution to the system of equations? 5x+3y=18 2x−3y=10

What is the missing constant term in the perfect square that starts with x^2 -20x

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol