Applications Quadratic Formula Find two numbers whose sum is 346 and whose square roots differ by 4.

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.