55⁶⁶>66⁵⁵

55⁶⁶>66⁵⁵. like ik ha.^-^

Ta có:    55^66 = (55^6)^11 = ((11.5)^6)^11 = (11^6.5^6)^11 = (11^5.11.5^6)^11

              66^55 = (66^5)^11 = ((11.6)^5)^11 = (11^5.6^5)^11

Vì 11.5^6 > 6^5 nên 55^66 > 66^55

Ta có :

\(\xrightarrow[34^{18}>32^{18}=\left(2^5\right)^{18}=290]{63^{15}< 64^{15}=\left(2^6\right)^{15}=2^{90}}\Rightarrow63^{15}< 54^{18}\)

a)

Ta có:

\(63^{15}< 64^{15}\Rightarrow63^{15}< \left(2^5\right)^{15}\Rightarrow63^{15}< 2^{90}\)

\(34^{18}>32^{18}\Rightarrow34^{18}>\left(2^5\right)^{18}\Rightarrow34^{18}>2^{90}\)

\(\Leftrightarrow34^{18}>63^{15}\)

b)

\(55^{66}=\left(55^6\right)^{11}=330^{11}\)

\(66^{55}=\left(66^5\right)^{11}=330^{11}\)

\(\Leftrightarrow55^{66}=66^{55}\)

55⁶⁶>66⁵⁵

https://olm.vn/hoi-dap/question/62924.html

vào đây xem nhé

có 55⁶⁶=(55⁶)¹¹=27680640625¹¹

      66⁵⁵=(66⁵)¹¹=1252332576¹¹

vì 27680640625>1252332576 =>55⁶⁶>66⁵⁵

=\(55^{6x11}và66^{5x11}\)

=\(330^{11}va330^{11}\)

=>\(55^{66}=66^{55}\)

55+55=110, 66+777=843

55+55/66+777

=55+0,8333...+777

=55,8333...+777

=832,8333...

\(\frac{55+55}{66+777}=\frac{110}{843}\)

55 + 55 - 22 + 66

= 110 - 22 + 66

= 88 + 66

= 154

55 + 55 - 22 + 66 = 154

k nhé

= 154 nhé

hok tốt

Ta có : 55⁶⁶ = [(11.5)⁶]¹¹ = (11⁶ . 5⁶)¹¹ = (11⁵ . 11 . 5⁶)¹¹

66⁵⁵ = [(11.6)⁵]¹¹ = (11⁵ . 6⁵)¹¹

Vì 11 . 5⁶ > 6⁵ nên 55⁶⁶ > 66⁵⁵

\(55^{66}=\left(55^6\right)^{11}=\left[\left(11.5\right)^6\right]^{11}=\left(11^6.5^6\right)^{11}=\left(11^5.11.5^6\right)^{11}\)

\(66^{55}=\left(66^5\right)^{11}=\left[\left(11.6\right)^5\right]^{11}=\left(11^5.6^5\right)^{11}\)

Vì : \(11.5^6>6^5\)

Vậy : \(55^{66}>66^{55}\)

Ta có : 55⁶⁶ = [(11.5)⁶]¹¹ = (11⁶ . 5⁶)¹¹ = (11⁵ . 11 . 5⁶)¹¹

66⁵⁵ = [(11.6)⁵]¹¹ = (11⁵ . 6⁵)¹¹

Vì 11 . 5⁶ > 6⁵ nên 55⁶⁶ > 66⁵⁵