Asequence starts 1,5,9,13,17 what’s the formula for the nth term of this sequence? ?

This is an arithmetic sequence, since it's pattern is +4.

n1 = 1

d = 4

n = 1 + (n-1)(4) < This is the formula for the nth term of the sequence.

fdvs

step-by-step explanation: vsfdvsfvd

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.