Các câu hỏi tương tự
Tinh Gia tri bieu thuc \(\frac{1}{\sqrt{7-\sqrt{24}}+1}-\frac{1}{\sqrt{7+\sqrt{24}+1}}\)
Tinh gia tri bieu thuc \(\frac{1}{\sqrt{7}-\sqrt{24}+1}-\frac{1}{\sqrt{7}+\sqrt{24}+1}\)
\(\left(\frac{\sqrt{14}-\sqrt{7}}{1-\sqrt{2}}+\frac{5-\sqrt{5}}{1-\sqrt{5}}\right):\frac{1}{\sqrt{7}-\sqrt{5}}\)
Tinh gia tri bieu thuc
Tinh gia tri cua bieu thuc : a) A = \(\frac{1}{\sqrt{2}+\sqrt{3}}+\frac{1}{\sqrt{3}+\sqrt{4}}+\frac{1}{\sqrt{4}+\sqrt{5}}+...+\frac{1}{\sqrt{24}+\sqrt{25}}\)
b) B = \(\frac{1}{\sqrt{3}+\sqrt{5}}+\frac{1}{\sqrt{5}+\sqrt{7}}+\frac{1}{\sqrt{7}+\sqrt{9}}+...+\frac{1}{\sqrt{97}+\sqrt{99}}\)
\(\frac{1+\frac{\sqrt{3}}{2}}{1+\sqrt{1+\frac{\sqrt{3}}{2}}}+\frac{1-\frac{\sqrt{3}}{2}}{1-\sqrt{1-\frac{\sqrt{3}}{2}}}\)
Hay cho minh thay canh tay cua may ban gioi toan naooooo
Tinh gia tri bieu thuc
cho \(f=\frac{\sqrt{x}-1}{\sqrt{x}-2}\)tinh gia tri bieu thuc f khi x\(=\frac{2+\sqrt{3}}{2}\)
Tim gia tri lon nhat va gia tri nho nhat cua bieu thuc sau: A=\(\frac{x+1}{x^2+x+1}\)
cho f(x)=\(y=\frac{x^3}{3x^2-3x+1}\)
tinh gia tri bieu thuc sauA=\(y\left(\frac{1}{112}\right)+y\left(\frac{2}{112}\right)+...+y\left(\frac{111}{112}\right)\)
cho x,ythoa man 0<x<1 ,0<y<1 va \(\frac{x}{1-x}+\frac{y}{1-y}=1\)
tinh gia tri cua bieu thuc P=\(x+y+\sqrt{x^2-xy+y^2}\)