In Santa's workshop, he had five (5) boy elves and eight (8) girl elves making toys for Christmas. In one hour, they produce
260 toys together. If each boy elf can produce four (4) toys per hour, how
many toys will the girl elves make in a hour

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.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7