3. An expression is given.
- 2y + ZX
3 7
-xt.
2 4
which are equivalent to the given expression?
Select each correct answer.
1 7
A. -
ху +
2 4
3
B. -x-2y+
2
1 3
C. - y + y + x)
(y + x)
4 2
1
D.
-2y+
.
줄
11-8y +6x +7)
4

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.

if i put something wrong your not gonna like it so rather not say nothing.

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.