What is the answer from the picture

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is