Thuc hien phep tinh:
B=\(\frac{2+\sqrt{3}}{\sqrt{2}+\sqrt{2+\sqrt{3}}}+\frac{2-\sqrt{3}}{\sqrt{2}-\sqrt{2-\sqrt{3}}}\)
Thuc hien phep tinh \(\frac{5}{4-\sqrt{11}}+\frac{1}{3+\sqrt{7}}-\frac{6}{\sqrt{7}-2}-\frac{\sqrt{7}-5}{2}\)
(căn bậc 5 +căn bậc 3+căn bậc1)*(căn bậc 5-căn bậc 1)
thuc hien phep tinh tren
thuc hien phep tinh:
\(\sqrt{3}.\sqrt{\frac{1}{27}}.\sqrt{5}.\sqrt{20}\)
thuc hien phep tnh:
\(\frac{8+2\sqrt{2}}{3-\sqrt{2}}-\frac{2+3\sqrt{2}}{\sqrt{2}}+\frac{\sqrt{2}}{1-\sqrt{2}}\)
bai toan:ko thuc hien phep chia,hay tim so du la f(x) cho g(x) trong cac truong hop sau:
tim he so cua x2 trong phep chia da thuc x5-7,834x3+7,851x2-4,568x+3,194 cho x-2,652
nguoi ta viet len bang 2013 so 1/2;1/3;...1/2014.moi lan thuc hien,nguoi ta xoa di hai so bat ki x,y tren bang roi viet them so x+y+xy(cac so con lai giu nguyen).Sau 2012 lan thuc hien thi tren bang con lai mot so.So do la
Giúp tớ câu này với . Rút gọn C={3x-x2/9-x2 - 1} : {9-x2/x2+x-6 - x-3/2-x - x+2/x+3}
