Tính
\(\frac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
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Tính : \(\dfrac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
\(=\dfrac{5\cdot2^{30}\cdot3^{18}-2^{29}\cdot3^{20}}{5\cdot2^{28}\cdot3^{19}-7\cdot2^{29}\cdot3^{18}}\)
\(=\dfrac{2^{29}\cdot3^{18}\left(5\cdot2-9\right)}{2^{28}\cdot3^{18}\left(5\cdot3-7\cdot2\right)}=2\)
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Tính : \(\dfrac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
\(\dfrac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}=\dfrac{5.2^{30}.3^{18}-2^{29}.3^{20}}{2^{28}.3^{19}.5-7.2^{29}.3^{18}}=\dfrac{2^{29}.3^{18}\left(5.3+3^2\right)}{2^{28}.3^{18}\left(3.5+7.2\right)}=\dfrac{2.24}{29}=\dfrac{48}{29}\)
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Thuc hien phep tinh) A = \(\frac{5.2^{30}.3^{18}-4.3^{20}2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
ʇɐɥʇ ɥuɐɹ uɐq ɔɐɔ ɐl ƃunp ıɥʇ ʎɐp uǝp ɔonp ɔop uɐq ɔɐɔ ɐl ʇǝıq ɥuıɯ ƃunɥu 'ɔonp ɔop ıoɯ ıɐl ɔonƃu ʎɐox ıɐɥd ɐʌ ɔop oɥʞ ɐl ʇɐɹ ıɥʇ ʎɐu ǝɥʇ ʇǝıʌ ɐl ʇǝıq ɥuıɯ
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Tính nhanh \(\frac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.6^{19}-7.2^{29}.27^6}\)
tố uyên sai rồi
\(\frac{5.2^{30}.3^{18}-2^{^2}.3^{^{20}}.2^{^{27}}}{5.2^{^9}.6^{^{19}}-7.2^{^{29}}.27^{^6}}\)
\(=\frac{5.2^{^{30}}.3^{^{18}}-2^{^{29}}.3^{^{20}}}{5.2^{^9}.2^{^{19}}.3^{^{19}}-7.2^{^{29}}.\left(3^{^3}\right)^6}\)
\(=\frac{5.2.2^{^{29}}.3^{^{18}}-2^{^{29}}.3^{^2}.3^{^{18}}}{5.2^{^{28}}.3^{^{19}}-7.2^{^{29}}.3^{^{18}}}\)
\(=\frac{2^{^{29}}.3^{^{18}}\left(2.5-3^{^2}\right)}{5.2^{^{28}}.3.3^{^{18}}-7.2.2^{^{28}}.3^{^{18}}}\)
\(=\frac{2^{^{29}}.3^{^{18}}.\left(10-9\right)}{2^{^{28}}.3^{^{18}}.\left(5.3-7.2\right)}\)
\(=\frac{2^{^{29}}.3^{^{18}}}{2^{^{28}}.3^{^{18}}}=2\)
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Thực hiện phép tính : \(\dfrac{5.2^{30}.3^{18}-2^3.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
Tinh hop li :
A = \(\frac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.6^{19}-7.2^{29}.3^{18}}\)
\(A=\frac{5.2^{30}.3^{18}-2^2.3^{20}.2^{27}}{5.2^9.6^{19}-7.2^{29}.3^{18}}\)
\(A=\frac{5.2^{30}.3^{18}-2^{29}.3^{20}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
\(A=\frac{5.2^{30}.3^{18}-2^{29}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
\(A=\frac{2^{29}.3^{18}.\left(5.2.1-9\right)}{2^{28}.3^{18}.\left(5.1.3-7.2.1\right)}\)
\(A=\frac{2.1}{1}=2\)
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thank you bạn nha, Le Quang Phúc.
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tính\(\frac{5.2^{30}.3^{18}-4.3^{20}.2^{27}}{5.2^9.3^{19}-7.2^{29}.3^{18}}\)
thực hiện các phép tính sau:
A =\(\frac{5.2^{30}.3^{18}-4.3^{20}.2^{27}}{5.2^9.2^{19}.3^{19}-7.2^{29}.3^{18}}\)
B = 1 - 3 + 5 - 7 + 9 - 11 + ..... + 2017 - 2019
C =\(\left(\frac{151515}{606060}+\frac{151515}{121212}+\frac{151515}{202020}+\frac{151515}{303030}+\frac{151515}{424242}\right).\frac{28}{15}\)
A=227 .318(5.23-4.32)
228.318(5.3-7.2)
( 40-36)
2(15-14)
=4/2=2
CÂU TRẢ LỜI CỦA TUI CÓ DẤU GẠCH GIỮA PS NHÉ
Tính:
\(\frac{5.2^{30}.3^{18}-2^{29}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)
\(\frac{5.2^{30}.3^{18}-2^{29}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}=\frac{2^{29}.3^{18}\left(5.2-9\right)}{2^{28}.3^{18}\left(5.3-7.2\right)}=\frac{2.1}{1}=2\)
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\(\frac{5\cdot2^{30}\cdot3^{18}-2^{29}\cdot3^{20}}{5\cdot2^{28}\cdot3^{19}-7\cdot2^{29}\cdot3^{18}}\)
\(\frac{2^{28}\cdot3^{18}\left(5\cdot2^2-2\cdot3^2\right)}{2^{28}\cdot3^{18}\left(5\cdot3-7\cdot2\right)}\)
\(\frac{5\cdot2^2-2\cdot3^2}{5\cdot3-7\cdot2}\)
\(\frac{5\cdot4-2\cdot9}{15-14}\)
\(\frac{20-18}{1}\)
\(\frac{2}{1}=2\)
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