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\(\left(-32\right)^9=-\left(2^5\right)^9=-\left(2^{45}\right)\)
\(\left(-16\right)^{13}=-\left(2^4\right)^{13}=-\left(2^{52}\right)\)
vì -2^45>-2^52hay -16^13>-32^9
ta có: 3213 = ( 25)13 = 265
1617 = (24)17 = 268
=> 265 < 268 => 3213 < 1617
Toán 6 ?
Ta có :
\(\left(-\frac{1}{16}\right)^{100}=\left(\frac{1}{16}\right)^{100}=\frac{1}{16^{100}}\)
\(\left(-\frac{1}{2}\right)^{500}=\left(\frac{1}{2}\right)^{500}=\frac{1}{2^{500}}=\frac{1}{\left(2^4\right)^{125}}=\frac{1}{16^{125}}\)
Do \(\frac{1}{16^{100}}>\frac{1}{16^{125}}\left(16^{100}< 16^{125}\right)\)
\(\Rightarrow\left(-\frac{1}{16}\right)^{100}>\left(-\frac{1}{.2}\right)^{500}\)
Vậy ...
a) \(\left(-\frac{1}{2}\right)^{500}=\left[\left(-\frac{1}{2}^5\right)^{100}\right]=\left(\frac{-1}{32}\right)^{100}\)
Vì \(\left(-\frac{1}{16}\right)^{100}\) > \(\left(\frac{-1}{32}\right)^{100}\) nên \(\left(-\frac{1}{16}\right)^{100}>\left(-\frac{1}{2}\right)^{500}\)
b) Câu này mk ko bt
Bạn thông cảm
\(32^7=\left(2^5\right)^7=2^{35}\)
\(16^9=\left(2^4\right)^9=2^{36}\)
thế vào rồi so sánh
\(\frac{2^{4-x}}{16^5}=32^6\)
\(\Rightarrow\frac{2^{4-x}}{\left(2^4\right)^5}=\left(2^5\right)^6\)
\(\Rightarrow\frac{2^{4-x}}{2^{20}}=2^{30}\)
\(\Rightarrow2^{4-x}=2^{30}.2^{20}\)
\(\Rightarrow2^{4-x}=2^{50}\)
\(\Rightarrow4-x=50\)
\(\Rightarrow x=-46\)
A=\(\frac{14^{16}.21^{32}.35^{48}}{10^{16}.15^{32}.7^{96}}\)= \(\frac{\left(2.7\right)^{16}.\left(3.7\right)^{32}.\left(5.7\right)^{48}}{\left(2.5\right)^{16}.\left(3.5\right)^{32}.7^{96}}\)= \(\frac{2^{16}.7^{16}.3^{32}.7^{32}.5^{48}.7^{48}}{2^{16}.5^{16}.3^{32}.5^{32}.7^{96}}\)= \(\frac{2^{16}.7^{96}.3^{32}.5^{48}}{2^{16}.5^{48}.3^{32}.7^{96}}\)=1
\(\frac{14^{16}.21^{32}.35^{48}}{10^{16}.15^{32}.7^{96}}=\frac{2^{16}.7^{16}.3^{32}.7^{32}.5^{48}.7^{48}}{2^{16}.5^{16}.3^{32}.5^{32}.7^{96}}\)
\(=\frac{2^{16}.\left(7^{16}.7^{32}.7^{48}\right).5^{48}.3^{32}}{2^{16}\left(5^{16}.5^{32}\right).3^{32}.7^{96}}=\frac{2^{16}.7^{96}.5^{48}.3^{32}}{2^{16}.5^{48}.3^{32}.7^{96}}\)=1
1632=(24)32=2(4x32)=2128
3216=(28)16=2(8x16)=2128
=> 1632=3216
Mik ko bít là mik làm đúng hay làm sai nữa, thấy BEN 10 có kết quả là 1632>3216
Nếu mik đúng thì k cho mik nha 😊😊😊😊