Which expression is equivalent to 2x +3 – 3x+(-2)?

A x + 5
B 1/12x-1
C X+1
D 1 - 1/12x

c)

Step-by-step explanation:

2x + 3 - 3x +(-2)

2x -3x + 3 + (-2)

-1x + 1

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.

47 - 90 = 43

43 - 180 = x

x = 137