I REALY NEED HELP ON THIS. The area of the continent of North America is about 9,540,000 square miles. Write 9,540,000 in expanded from using Exponents to show powers of 10

9x10^6  + 5x10^5 + 4x10^4

Step-by-step explanation:

Just break it down

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.