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\(77^{33}=\left(11.7\right)^{33}=11^{33}.7^{33}=11^{33}.\left(7^3\right)^{11}=11^{33}.343\left(1\right)\)
\(33^{77}=\left(3.11\right)^{77}=3^{77}.11^{77}=\left(3^7\right)^{11}.11^{77}=2187^{11}.11^{77}\left(2\right)\)
Từ \(\left(1\right)+\left(2\right)\Leftrightarrow33^{77}>77^{33}\)
Ta có:\(33^{77}=3^{77}.11^{77}=\left(3^7\right)^{11}.11^{77}=2187^{11}.11^{77}\)
\(77^{33}=7^{33}.11^{33}=\left(7^3\right)^{11}.11^{33}=343^{11}.11^{33}\)
Do \(2188>343\Rightarrow2187^{11}>343^{11}\Rightarrow3^{77}>7^{33}\)
Lại có\(11^{77}>11^{33}\)
\(\Rightarrow33^{77}>77^{33}\)
Vậy\(33^{77}>77^{33}\)
77 . 25 + 5 . 77 + 77 . 14 + 33 . 77
= 77. ( 25 + 5 + 14 + 33 )
= 77 . 77
= 772
= 5929
~ Hok tốt ~
77 . 25 + 5 . 77 + 77 . 14 + 33 . 77
=77 . (25 + 5 + 14 + 33)
=77 . 77
=5929
Chúc bn học tốt! Kick cho mik nha!
\(=\left(-67\right).\left(-33\right)-67.77+\left(-67\right).33-77.33\)
\(=\left[\left(-67\right).\left(-33\right)+\left(-67\right).33\right]-66.77-77.33\)
\(=-77\left(66+33\right)=-77.99=-7623\)
77.(-7)-33.7-10.(-7)
=77.(-7)-(-33).(-7)-10.(-7)
=(-7).[77-(-33)-10]
=(-7).(77+33-10)=(-7).100=-700
77 . ( - 7 ) - 33 . 7 - 10 . ( - 7 )
=-539- 33 . 7 - 10 . ( - 7 )
=-539-231 - 10 . ( - 7 )
=-539-231 - (-70)
=-539-231 +70
=-770+70
=-700
77 + ( - 33 )
= 77 - 33
= 44
= 44
Nha bnnguyenthingochuyen
k mk đi nha
Thanks