Estimate the value of each irrational expression to the nearest integer.
–1 :
0 :
1 :

Options:
a. (-3√4)·√3+(2√9)·√3
b. (-√20)/(-√21)
c. (2√2)+(3√2)/(5√2)
d. -3π/(3√10)
e. 4·(3√2)-(2√2)·√36