Rút gọn các biểu thức sau: a,√3-2√2
b,√4-2√3
c,√8-2√7
d,√7-4√3
e,√11-6√2
(Tất cả các căn đều không cách)

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?

Sum of the interior angles of a pentagon