PLEASE HELP ASAP The area of a square is 400 square units. If the length of each side of the square increased by one unit, would its area be a rational number? Explain.

yes it will be a rational number.

Step-by-step explanation:

square having area 400 sq units will have a length of 20 on each side

by increasing the lenght of each side by 1 we get 21

then the area will be 21 ^ 2 which equals 441

Therefore we get a rational number.

answer: the answer is 127 degrees

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.