-2x-5 = 19
I need help with this

-12

Step-by-step explanation:

First you add five to the 19 and get 24 and then you divide -2x by 24 and you get -12

x=-12

Step-by-step explanation:

-2x-5=19

+5 to both sides

-2x=24

÷-2 to both sides and you get -12

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.

493 would be the correct answer

step-by-step explanation: