Toán Lớp 7: a)5^12. 10^13/16^11.125^25
b)3^3x + 3^3x+2
hộ mik vs mik cần gấp trong 5-10p
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Toán Lớp 7: a)5^12. 10^13/16^11.125^25
b)3^3x + 3^3x+2
hộ mik vs mik cần gấp trong 5-10p
Comments ( 1 )
a)(5^12 . 10^13 )/(16^11 . 125^25 )
=(5^12 . 10^13 )/(16^11 . (5^3)^25 )
=(5^12 . 10^13 )/(16^11 . 5^75)
=(10^13 )/(16 ^11 . 5^63 )
=(5^13 . 2^13 )/((2^ 4)^11 . 5^63)
=(2^13 )/(2^44 . 5^50 )
=1/(2^31 . 5^50)
b)3^(3x)+3^(3x+2)
=3^(3x+3x+2)
=3^(2.3x+2)
=3^(6x+2)