Răspuns :
y=5 la puterea 34+5Răspuns:
a) x=-5la puterea 35= (-5)la puterea 35
y=-3*2la puterea 68=(-6)la puterea 68=> 6 la puterea 68
x<y = (-5)la puterea 35<6 la puterea 68
b)x=3 la puterea 53
y=5 la puterea 34+5 totu la puterea 35=(5 la puterea 39)la puterea 35=5la puterea 35*39= 5 la puterea 1365
x<y=3la puterea 53<5 la puterea 1365
Explicație pas cu pas:
[tex]\it a)\ \ x=-5^{35}=-5\cdot5^{34}\\ \\ y=-3\cdot2^{68}=-3\cdot2^{2\cdot34}=-3\cdot(2^2)^{34}=-3\cdot4^{34}\\ \\ -5\cdot5^{34}<-3\cdot4^{34} \Rightarrow\ x< y\\ \\ \\ b)\ \ x=3^{53}=3^2\cdot3^{51}=9\cdot(3^3)^{17}=9\cdot27^{17}\\ \\ y=5^{34} + 5^{35}=5^{34}(1+5)=6\cdot5^{34}=6\cdot(5^2)^{17}=6\cdot25^{17}\\ \\ 9\cdot27^{17}> 6\cdot25^{17} \Rightarrow x > y.[/tex]