172 boys in class
we have total number of students in class = 410
we assume that the number of boys in class = X
Number of girls in class is 66 more then boyes we assume total number of girls = X+66
if we add number of girls and boyes then we found total strength of classX+X+66=4102X+66=4102x=344X=172
number of boys=172number of girls =238
brainly.com/question/28449371
20859
<span>1/root(5-x) = 1/(root5 * root 1- x/5)
1/root5 * (1-x/5)^-1/2
Using the 1st 2 terms of the binomial expansion 1 +nx:
1/root5 ( 1 + x/10)
= X/10root5 + 1/root5</span>
