The product of -9/17 and its reciprocal​

The product of any number and its reciprocal is always 1

Step-by-step explanation:

Example:

The reciprocal of a number 'a' is '1/a'.

Therefore, the product of 'a' and its reciprocal gives:

=a × (1/a)

=a/a

=1

the product of -9/17 and it's reciprocal will be 1

because they could drop even lower..

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.