Is the simplified form of 2√3 - 2√3 rational?

Points j and k plotted on the coordinate grid are two vertices of rectangle jklm rectangle jklm has an area of 7 square units point j is located at 2,1 and point k is located at -5,1 each vertex of the rectangle is located at a point that has integer coordinates. what is the perimeter of rectangle jklm? (need answer asap)

What is 2/4+1/4,find the common denominator

What is an equivalent expression to ( 14400^4 )^8