On a coordinate plane, parallelogram A B C D is shown. An altitude is drawn from point B to point E on side D C to form a right angle. The length of B E is 14.5. Point A is at (negative 10, 10), point B is at (4, 8), point C is at (10, negative 8), and point D is at (negative 4, negative 6). Segment BE is the altitude of parallelogram ABCD. BE is approximately 14.5 units long. What is the area of the parallelogram rounded to the nearest unit? square units

4x and 6y

im not sure though

is this part of a question or something

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.