Two trains leave the station at the same time one heading west and the other east the westbound train travels at 70 mph the eastbound train travels at 90 mph how long will it take the two trains to be 256 miles apart

State one method by which you can recognize a perfect square trinomial.

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.

Felix wrote several equations and determined that only one of the equations has no solution. which of these equations has no solution?