1. Find the value of the expressions using the correct order of operations. a. -8 +5 (-3))
b. 5. (
29)
- 8+ -15 = -23
c. -57-4-3
0
d. 4+ (-5). 5-6
e. 3.-5. (-5)
f. (-5 + 4) 8
-8
21
8.
P: -64.-16 -
2
-5
i. -8
4
2. Find the value of the expressions when x = -2 and y - 5.
a. x(y + 1) -2 (5+1)
b. xy + 1
c. -2(x + y)

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.

10

step-by-step explanation: