Evaluate −4x−y+4 −4x−y+4 when x=− 1 4 x=−14 and y=3

- 4x - y + 4

If x = - 14 and y = 3, we just plug in and solve

- 4(14) - (3) + 4

- 56 - 3 + 4

- 56 + 1

- 55

It is not -55

Step-by-step explanation:

is only a line? i think so

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.