Giúp mk câu này vs mn!!!!!!!
Bài tập: Tính hợp lí:
C = \(\left(9^{15}-11.3^{22}\right):\left(2^2.3^{28}\right)\)
Các bn ơi giúp mn câu này zới,gấp lắm
\(\frac{11.3^{2.2}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
\(\frac{11.3^{2.2}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
\(=\frac{11.3^4.3^7-\left(3^2\right)^{15}}{2^2.3^{28}}\)
\(=\frac{11.3^{11}-3^{30}}{2^2.3^{28}}\)
\(=\frac{3^{11}.\left(11-3^{19}\right)}{2^2.3^{28}}\)
\(=\frac{11-3^{19}}{2^2.3^{17}}\)
Bạn Châu làm đúng rồi !
Tuy nhiên bạn My lại đề bài nhé!
Tham khảo đề và bài làm:
\(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}=\frac{11.3^{22+7}-\left(3^2\right)^{15}}{2^2.3^{14.2}}\)
\(=\frac{11.3^{29}-3^{30}}{2^2.3^{28}}=\frac{3^{29}\left(11-3\right)}{2^2.3^{28}}=\frac{3.8}{2^2}=6\)
\(\frac{11\cdot3^{2\cdot2}\cdot3^7-9^{15}}{\left(2\cdot3^{14}\right)^2}\)
\(=\frac{11\cdot3^4\cdot3^7-9^{15}}{2^2\cdot3^{28}}\)
\(=\frac{11\cdot3^{11}-3^{30}}{2^2\cdot3^{28}}\)
\(=\frac{3^{11}\cdot\left(11-3^{19}\right)}{2^2\cdot3^{28}}\)
\(=\frac{11-3^{19}}{2^2\cdot3^{17}}\)
\(=\frac{11-1162261467}{4\cdot129140163}\)
\(=\frac{-1162261456}{516560652}\)
\(=-2,2499979\)
kt lại đề đi bạn
Tính :
A = \(\dfrac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
A=\(\dfrac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}=\dfrac{11.3^{29}-3^{29}.3}{2^2.3^{28}}=\dfrac{3^{29}.\left(11-3\right)}{2^2.3^{28}}=\dfrac{3^{29}.2^3}{2^2.3^{28}}=3.2=6\)
\(A=\dfrac{11\cdot3^{22}\cdot3^7-9^{15}}{\left(2\cdot3^{14}\right)^2}=\dfrac{11\cdot3^{29}-3^{30}}{2^2\cdot3^{28}}\)
\(=\dfrac{3^{29}\cdot2^3}{3^{28}\cdot2^2}=3\cdot2=6\)
Tính hợp lý biểu thức sau:
\(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
ta có \(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}=\frac{11.3^{29}-\left(3^2\right)^{15}}{2^2.\left(3^{14}\right)^2}\)
= \(\frac{11.3^{29}-3^{30}}{2^2.3^{28}}=\frac{3^{29}\left(11-3\right)}{2^2.3^{28}}\)
= \(\frac{3^{29}.2^3}{2^2.3^{28}}=3.2=6\)
Tính
A=\(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
\(\frac{11.3^{22}.3^7-9^{15}}{\left(3^{14}\right)^2}\)
bài toán là thực hiện phép tính giúp mk nha
\(\frac{11.3^{22}.3^7-9^{15}}{\left(3^{14}\right)^2}\)
\(=\frac{11.3^{29}-3^{30}}{3^{28}}\)
\(=\frac{3^{29}.\left(11-3\right)}{3^{28}}\)
\(=3.8=24\)
\(\frac{11.3^{22}.3^7-9^{15}}{ \left(3^{14}\right)^2}\)
= \(\frac{11.3.3^{21}.3^7-\left(3^2\right)^{15}}{\left(3^{14}\right)^2}\)
= \(\frac{33.3^{28}-3^{30}}{3^{28}}\)
= \(\frac{33.3^{28}-3^{28}.9}{3^{28}}\)
= \(\frac{3^{28}.\left(33-9\right)}{3^{28}}\)
= \(\frac{24}{1}=24\)
\(\frac{11.3^{22}.3^7-9^{15}}{\left(3^{14}\right)^2}\)
\(=\frac{11.3^{29}-3^{30}}{3^{28}}\)
\(=\frac{3^{29}.\left(11-3\right)}{3^{28}}\)
\(=3.8\)
\(=24\)
tính giá trị biểu thức
\(\frac{11.3^{22}.3^8-9^{15}}{\left[2.3^{14}\right]^2}\)
Thực hiện phép tính: A=\(\frac{5.\left(2^2.3^2\right)^9.\left(2^2\right)^6-2.\left(2^2.3\right)^{14}.3^4}{5.2^{28}.3^{18}-7.2^{29}.3^{18}}\)
Giúp mk nha mn.
A = -2 nhé ,
gợi ý các bạn chọn (k) đúng cho mình.
Help me please
Bài 1 : Tính
\(\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
Bài 2 : Tìm x
\(\left(2x-15\right)^5=\left(2x-15\right)^7\)
Bài 3: Tìm chữ số tận cùng :
\(58^{33}\)
Giúp mình nha . Thanks
N=\(\dfrac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
bạn có máy tính 570 vn plus ko tính là ra
N = 11. 322 . 37 - 915 / (2.314)2 = 11. 329 - 915/ 628 = 6