Simplify the expression. -10 x 6 x 1/2 + 45

a.
75

b.
–35

c.

–45

d.
15

simplify the expression. 2/3 x [15 x 5 + (-24)] + (-18)

a.

52

b.
48

c.
22

d.
16

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.

c > -10.55

step-by-step explanation: