thuc hien phep tinh \(\sqrt[4]{5-4}\)
Thuc hien phep tinh \(\frac{5}{4-\sqrt{11}}+\frac{1}{3+\sqrt{7}}-\frac{6}{\sqrt{7}-2}-\frac{\sqrt{7}-5}{2}\)
1/4 - 1/3+ 5/12 Thuc hien cac phep tinh (tinh hop li neu co the)
\(\dfrac{1}{4}-\dfrac{1}{3}+\dfrac{5}{12}\\ =\dfrac{3}{12}-\dfrac{4}{12}+\dfrac{5}{12}\\ =\dfrac{3-4+5}{12}\\ =\dfrac{4}{12}\\ =\dfrac{1}{3}\)
thuc hien phep tinh:-38.(25-4)+25.(-4+38)
-38.(25-4)+25.(-4+38)
= -38.21 + 25.34
= -789 + 850
= 61
cho mik nha mọi người
-38 . ( 25 - 4 ) + 25 . ( -4 + 38 )
= -38 . 21 + 25 . 34
= -798 + 850
= 52
thuc hien phep tinh:
\(\sqrt{3}.\sqrt{\frac{1}{27}}.\sqrt{5}.\sqrt{20}\)
\(\sqrt{3}.\sqrt{\frac{1}{27}}.\sqrt{5}.\sqrt{20}=\sqrt{3.\frac{1}{27}}.\sqrt{5.20}=\sqrt{\frac{1}{9}}.\sqrt{100}=\frac{1}{3}.10=\frac{10}{3}\)
Voi 4 chu so 2 va cach phep tinh, hay thuc hien cac phep tinh de duoc ket qua la 9
22:2-2=9
lý bá hưng và các bạn xinh đẹp,học giỏi k cho mk nha
thuc hien phep tinh (Tinh nhanh neu co the)
(-5/12+7/4-3/8)-|4 va 1/2 -7 va 1/2|-( 1/4-5/2)
thuc hien phep tinh (75.5^4+175.5^4):(20.25.125-625.75)
(75.54+175.54):(20.25.125-625.75)= (75.625+175.625):(62500-46875)
= 156250:15625= 10
thuc hien phep tinh
( 5*4^15*9-4*3^20*8^9) /( 5*2^9*6^19-7*2^29*27^6)
Tách hai dấu ngoặc thành hai vế A và B
Ta có :
A=5.415.99-4.320.89=5.230.318-22.227.320
=229.318(2.5-32)=229.318
B=5.29.619-7.229.276=5.29.219.319-7.229.318
=228.318(5.3-7.2)=228.318
=>A:B=229.318:228:318=2
Thuc hien phep tinh :
-4/7 . 2/5 + 6/7 . -3/10
Help me !!!! Thanks
\(=\frac{-8}{35}-\frac{9}{35}\)
\(=\frac{-17}{35}\)
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