giúp mình đi làm ơn đó.mình cần rất gấp:) :) :)
Bài 2:
=>3^x-1*5=135
=>3^x-1=27
=>x-1=3
=>x=4
Bài 1:
a: \(\left(-\dfrac{1}{16}\right)^{100}=\left(\dfrac{1}{16}\right)^{100}=\left(\dfrac{1}{2}\right)^{400}< \left(\dfrac{1}{2}\right)^{500}=\left(-\dfrac{1}{2}\right)^{500}\)
b: \(\left(-32\right)^9=\left(-2^5\right)^9=-2^{45}=-2^{13}\cdot2^{32}\)
\(\left(-18\right)^{13}=\left(-2\cdot3^2\right)^{13}=-2^{13}\cdot3^{26}\)
mà 2^32<3^26
nên \(\left(-32\right)^9>\left(-18\right)^{13}\)
c: \(\left(0.37\right)^{100}>0>\left(-2\right)^{101}\)