=0,1.√225-√\(\dfrac{1}{4}\)
=0,1.15-\(\dfrac{1}{2}\)
=1,5-\(\dfrac{1}{2}\)
=\(\dfrac{15}{10}\)-\(\dfrac{5}{10}\)
=1
=0,1.√225-√\(\dfrac{1}{4}\)
=0,1.15-\(\dfrac{1}{2}\)
=1,5-\(\dfrac{1}{2}\)
=\(\dfrac{15}{10}\)-\(\dfrac{5}{10}\)
=1
TÍNH GIÁ TRỊ CÁC BIỂU THỨC SAU
A,\(\sqrt{0,09}-\sqrt{0,64}\)
B,\(0,1\times\sqrt{225}-\sqrt{\frac{1}{4}}\)
C,\(\sqrt{0,36}\times\sqrt{\frac{25}{16}+\frac{1}{4}}\)
D,\(\sqrt{\frac{4}{81}}:\sqrt{\frac{25}{81}-1\frac{2}{5}}\)
a) A = \(3\frac{1}{117}.4\frac{1}{119}-1\frac{116}{117}.5\frac{118}{119}-\frac{5}{119}\)
b) B = \(4\frac{1}{115}.1\frac{1}{225}-5\frac{114}{115}.1\frac{224}{225}-\frac{10}{225}\)
Tính :\(A=\frac{1}{2\sqrt{1}+1\sqrt{2}}+\frac{1}{3\sqrt{2}+2\sqrt{3}}+\frac{1}{4\sqrt{3}+3\sqrt{4}}+....+\frac{1}{225\sqrt{224}+224\sqrt{225}}\)
Tính giá trị biểu thức :
a ) A = \(3\frac{1}{7}.4\frac{1}{119}-1\frac{116}{117}.5\frac{118}{119}-\frac{5}{119}\)
b ) B = \(4\frac{1}{115}.3\frac{1}{225}-5\frac{114}{115}.1\frac{224}{225}-\frac{10}{225}\)
A.Tính:
A=-(1-1/2).(1-1/3).(1-1/4)........(1-225).(1-226)+1 1/5
tính A=2017(225-1^2)(225-2^2)...(225-2015^2)
Tính nhanh;
a,2003^1^2.2004
b,2004^(225-1^2).(225-2^2)...(225-56^2)
Tính nhanh: 2017\(^{\left(225-1^2\right)\left(225-2^2\right)\left(225-3^2\right)...\left(225-56^2\right)}\)
9×(-1/3)²-(-2/15):(-0,1)³-5/2.(-4)