How can I get ready for a highschool entrance exam. ( Its a test to see if i'm smart enough to be in the highschool ) If someone could tell me stuff is very important to study and stuff that is not so important it would really help. Thank you.

Well u can study and relax. Most people overthink answers because they r so jittery and nervous. But, if you relax study and overthink a lot of answers u will ace that test, becuz u r capabe  of so much

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.

answer. d.289 hope that