tính
a 13.9+129-39+71
b (2^19.83-2^19.13+60.2^19):2^18
c) (5.4^15 .9^9 -4.3^20.8^9 ): ( 5.2^9 .6^19 -7.2^29 .27^6)
a, 13.9+129-39+71
=117+129-39+71
=246-39+71
=207+71
=278
b, (2^19.83-2^19.13+60.2^19):2^18=260
c, (5.4^15.9^9-4.3^20.8^9):(5.2^9.6^19-7..2^29.27^6)=3426338453
Mình có việc bận nên ko làm cụ thể nha. Sorry
6843 - 147 : <192 +54 :27 -11* 17>
6843-147:(192+54:27-11x17)
Giup mk nhoa
=6696:(192+2-187)
=6696:7
=\(\frac{6696}{7}\)
Bài 3 : Thực hiện phép tính
a) 126 + (-20) + 2004 +( -106)
b) 23. (-27) + 23. 73 + 54. 23
c) ( 22 + 15) . (-4) +11. (36 -21)
d) (-7) 2 . 9 + 48 : (-2) 3 - |- 5|
a . 667 - 195 . 93 : 465 + 372
b. 35 . 12. 173 + 12 . 27
c. 73 . 5 mũ 2 + 5 mũ 2 . 28 - 5 mũ 2
d. 321 - 21 . [ ( 2. 3 mũ 3 + 4 mũ 4 : 32 ) - 52 ]
idol nào giúp tôi , để thầy gióa tôi cho điểm miệng , kiểm tra ko có thì chết mất
b: \(=12\left(35\cdot173+27\right)\)
\(=12\cdot6082=72984\)
Tính nhanh:
a)35×32+35×41+73×19+73×46
b)6×27×8+2×24×31+4×42×12
(Giúp mình nhanh nha)
1.tính:
a) A= \(2^3\).\(5^3-3\).{639-8(\(7^8\):\(7^6\)+1)}
b) B= \(-19^2 \)-{147-2[\(7^3\)+(93-126):(6-\(3^2\))]}
a) A= \(2^3.5^3-3.\left[639-8\left(7^8:7^6+1\right)\right]\)
= \(2^3.5^3-3.\left[639-8.50\right]\)
= \(2^3.5^3-3.\left[639-400\right]\)
= \(2^3.5^3-3.239\)
= \(10^3-717\)
= 283
b) \(-19^2-\left\{147-2\left[7^3+\left(93-126\right):\left(6-3^2\right)\right]\right\}\)
= \(-19^2-\left\{147-2\left[7^3+\left(-33\right):\left(-3\right)\right]\right\}\)
= \(-19^2-\left\{147-2\left[7^3+11\right]\right\}\)
\(=-19^2-\left\{147-2.354\right\}\)
\(=-19^2-\left\{-561\right\}\)
= 922
Chúc bạn học tốt
Tính:
a. \(5\sqrt{2}-2\sqrt{48}+6\sqrt{75}-\sqrt{108}\)
b.\(2\sqrt{147}-\dfrac{3}{32}\sqrt{192}+\dfrac{4}{18}\sqrt{243}-\dfrac{1}{10}\sqrt{300}\)
c. \(-\dfrac{1}{2}\sqrt{108}+\dfrac{1}{15}\sqrt{75}-\dfrac{1}{22}\sqrt{363}+\sqrt{12}\)
d. \(\dfrac{5}{8}\sqrt{48}-\dfrac{1}{33}\sqrt{363}+\dfrac{3}{14}\sqrt{147}-\dfrac{1}{4}\sqrt{192}\)
e. \(\dfrac{3}{2}\sqrt{12}+\dfrac{7}{5}\sqrt{75}-\dfrac{9}{10}\sqrt{300}+\dfrac{11}{6}\sqrt{108}\)
a: \(5\sqrt{2}-8\sqrt{3}+30\sqrt{3}-6\sqrt{3}=5\sqrt{2}+16\sqrt{3}\)
b: \(=14\sqrt{3}-\dfrac{3}{32}\cdot8\sqrt{3}+\dfrac{4}{18}\cdot9\sqrt{3}-\dfrac{1}{10}\cdot10\sqrt{3}\)
\(=14\sqrt{3}-\dfrac{3}{4}\sqrt{3}+2\sqrt{3}-1\sqrt{3}=\dfrac{57}{4}\sqrt{3}\)
c: \(=\dfrac{-1}{2}\cdot6\sqrt{3}+\dfrac{1}{15}\cdot5\sqrt{3}-\dfrac{1}{22}\cdot11\sqrt{3}+2\sqrt{3}\)
\(=-3\sqrt{3}+\dfrac{1}{3}\sqrt{3}-\dfrac{1}{2}\sqrt{3}+2\sqrt{3}=-\dfrac{7}{6}\sqrt{3}\)
d: \(=\dfrac{5}{8}\cdot4\sqrt{3}-\dfrac{1}{33}\cdot11\sqrt{3}+\dfrac{3}{14}\cdot7\sqrt{3}-\dfrac{1}{4}\cdot8\sqrt{3}\)
\(=\dfrac{5}{2}\sqrt{3}-\dfrac{1}{3}\sqrt{3}+\dfrac{3}{2}\sqrt{3}-2\sqrt{3}=\dfrac{5}{3}\sqrt{3}\)
C= 4 + 1/7^6 + 3/7 + 4/7^2 + -441/7^6 + 27/7^5
D= 147/7^5 + 4+ 35/7^7 + 4/7^2 + 27/7^5 + -9/7^9
So sánh C và D