So sánh
a,\(\left(-32\right)\)\(^9\)và \(\left(-16\right)\)\(^{13}\)
b,\(\left(-5\right)\)\(^{30}\)và \(\left(-3\right)\)\(^{50}\)
c,\(\left(-32\right)\)\(^9\)và \(\left(-18\right)\)\(^{13}\)
d, \(\left(\frac{-1}{16}\right)\)và \(\left(\frac{-1}{2}\right)\)
a) ta có: (-32)9 = [(-2)5 ]9 = (-2)45 = - (2)45
(-16)13 = - [ 24 ]13 = - (2)52
=> ....
b) ta có: (-5)30 = 530 = (53)10 = 12510
(-3)50 = 350 = (35)10 = 24310
=> ....
c) ta có: (-32)9 = (-2)45 = (-2)13 . 232
(-18)13 = [(-2).32 ]13 = (-2)13 . 339
=> ....
d) ta có: \(\left(-\frac{1}{16}\right)=-\left(\frac{1}{2}\right)^4.\)
\(\left(-\frac{1}{2}\right)=-\left(\frac{1}{2}\right)^1< -\left(\frac{1}{2}\right)^4\)